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American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and TestingTable of Contents1.0General1.1Evaluation Base Clay1.2Calibration Barite1.3Test Calibration Bentonite1.4Documentation Requirements1.5Shipping Requirements1.6Marking Requirements1.7Storage ntonite2.4Non-Treated Bentonite2.5Haematite2.6High-Viscosity CMC (CMC-HVT)2.7Low-Viscosity CMC (CMC-LVT)2.8High-Viscosity Polyanionic Cellulose (PAC-HV)2.9Low-Viscosity Polyanionic Cellulose (PAC-LV)2.10Sepiolite2.11Starch2.12Xanthan GumCopyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com1
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing1.0GENERALSpecification 13A includes the following requirements for product ordered and may be applicable in addition toany product-specific requirements listed in other sections identified herein:1.1EVALUATION BASE CLAYTesting Product:Evaluation Base ClayGrade:API StandardProduct Information:API Specification 13A – 4.2.5API standard evaluation base clay (formerly OCMA base clay;not OCMA grade bentonite): stocks of API standard evaluationbase clay have been set aside and can be ordered through theAPI.API Specification 13A – 17.4.1.2 Footnote 13API standard evaluation base clay is an example of a suitableproduct available commercially. Requests for clay should bedirected to the API which will forward the request to a supplierfor further handling. This information is given for theconvenience of users of this Internal Standard and does notconstitute an endorsement by ISO of this product.1.2CALIBRATION BARITETesting Product:Calibration bariteGrade:CalibrationProduct Information:API Specification 13A – Annex B.1.2Calibration barite and test calibration bentonite are availablethrough the API offices (see 4.2.1) for use by laboratories todetermine their test precision.1.3TEST CALIBRATION BENTONITETesting Product:Test calibration bentoniteGrade:Test calibrationProduct Information:API Specification 13A – Annex B.1.2Calibration barite and test calibration bentonite are availablethrough the API offices (see 4.2.1) for use by laboratories todetermine their test precision.2Copyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing1.4DOCUMENTATION REQUIREMENTSDocumentation:Certificates of CalibrationProduct:AllDescription of Requirements:Use of test calibration materials in checking testingproceduresAPI Specification 13A – 4.2.3The custodian Shall furnish a certificate ofanalysis for each sample1.5SHIPPING REQUIREMENTSShipping:Packaging MaterialProduct:AllDescription of Requirements:API Specification 13A – 6.1.1Packaging of palletized goods should safeguardthe means of safe handling, transport, storageand identification, and minimize damage andspillage. Packed material should be inside thedimensions of the pallet although someoverhang is allowed.API Specification 13A – 4.2.3The custodian Shall furnish a certificate ofanalysis for each sampleShipping:PalletsProduct:AllDescription of Requirements:API Specification 13A – 6.2.2Preferred sizes for wooden pallets include thefollowing: a) 1 200 mm 1 000 mm (47 in 39in) CP6;b) 1 140 mm 1 140 mm (45 in 45 in)CP8/CP9/CP3;c) 1 219 mm 1 219 mm (48 in 48 in);d) 1 118 mm 1 321 mm (44 in 52 in);e) 1 067 mm 1 321 mm (42 in 52 in),equivalent to CP4/CP7;f) 1 016 mm 1 219 mm (40 in 48 in).NOTE CP is the size as defined in ISO 6780.API Specification 13A – 6.2.3Other pallet sizes and details concerning designand construction should be agreed upon by themanufacturer and the customer.Copyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com3
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing1.64Shipping:Pallet CoversProduct:AllDescription of Requirements:API Specification 13A – 6.6.2All plastics should be UV-stabilized, unlessotherwise requested.MARKING REQUIREMENTSMarking:BagsProduct:AllDescription of Requirements:API Specification 13A – 6.5Markings shall include the following, whereapplicable and as specified by individualcontracts:a) name of the material in print script at least 13mm (0,5 in) high;b) mass, which shall be denominated inkilograms, of the material in letters, or numbersand letters, at least 6 mm (0,25 in) high;c) lot/batch number in print script and/ornumbers at least 3 mm (0,125 in) high, traceableto manufacturer’s country of origin;d) identification as recyclable;e) safety information.Marking:PalletsProduct:AllDescription of Requirements:API Specification 13A – 6.4Markings should include the following, whereapplicable and as specified by individualcontracts:a) product name;b) gross/net mass, in kilograms (pounds);c) other information as required, such asmanufacturer's name, gross allowable mass,disposal options.Copyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing1.7STORAGE REQUIREMENTSStorage:AllProduct:AllDescription of Requirements:API Specification 13A – 6.8The manufacturer shall advise on storage uponrequest.Copyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com5
American Petroleum InstitutePurchasing Guidelines HandbookAPI Monogram EquipmentAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Grade:Drilling GradeProduct Description:API Specification 13A – 12.1.1Drilling-grade attapulgite clay is a naturally occurring claymineral. Accessory minerals include quartz, feldspar andcalcite.API Specification 13A – 12.1.2Product PhysicalRequirements:Drilling-grade attapulgite shall be deemed to meet therequirements of this International Standard if a compositesample representing no more than one day's productionconforms to the physical specifications of Table 11, representsthe product produced and is controlled by the manufacturer.Table 11 – Attapulgite physical specificationsRequirementStandardSuspension properties:Viscometer dial reading at 600 r/minNote:6Minimum 30Residue of diameter greater than 75 µmMaximum mass fraction 8,0 %Moisture, percentMaximum mass fraction 16,0 %General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasingGuidelineCopyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.2BARITEProduct:BariteGrade:Drilling GradeProduct Description:API Specification 13A – 7.1.1Drilling-grade barite is produced from commercial bariumsulfate-containing ores. The manufacturer shall retaincertificates of analysis or similar documentation on thesecommercial barium sulfate ores. It may be produced from asingle ore or a blend of ores and may be a straight-minedproduct or processed by beneficiation methods, i.e. washing,tabling, jigging or flotation. It may contain accessory mineralsin addition to the barium sulfate (BaSO4) mineral. Because ofmineral impurities, commercial barite can vary in colour fromoff-white to grey to red or brown.Product PhysicalRequirements:API Specification 13A – 7.1.2Manufacturer CertificateDocumentation:API Specification 13A – 7.1.1The manufacturer shall retain certificates of analysis or similardocumentation on these commercial barium sulfate ores.Drilling-grade barite shall be deemed to meet the requirementsof this International Standard if a composite samplerepresenting no more than one day's production conforms tothe chemical and physical specifications of Table 2, representsthe product produced and is controlled by the manufacturer.Table 2 – Barite physical and chemical requirementsRequirementDensityWater-soluble alkaline earth metals, as calciumNote:Standard4,20 g/ml, minimum250 mg/kg, maximumResidue greater than 75 µmMaximum mass fraction 3,0 %Particles less than 6 µm in equivalent sphericaldiameterMaximum mass fraction 30 %General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com7
American Petroleum InstitutePurchasing Guidelines HandbookAPI Monogram EquipmentAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and TestingProduct:Barite 4.1Grade:Drilling GradeProduct Description:API Specification 13A – 20.1.1Drilling grade barite is produced from commercial bariumsulfate-containing ores. It may be produced from a single oreor a blend of ores and may be a straight-mined product orprocessed by beneficiation methods, i.e. washing, tabling,jigging, or flotation. It may contain accessory minerals otherthan the barium sulfate (BaSO4) mineral. Because of mineralimpurities, commercial barite may vary in colour from off-whiteto grey to red or brown. Common accessory minerals aresilicates such as quartz and chert, carbonate compounds suchas siderite and dolomite, and metallic oxide and sulfidecompounds. Although these minerals are normally insoluble,they can, under certain conditions, react with othercomponents in some types of drilling fluids and cause adversechanges in the drilling fluid properties. (See Annex A for moredetails.)Product PhysicalRequirements:API Specification 13A – 20.1.5Manufacturer CertificateDocumentation:API Specification 13A – 20.1.1The manufacturer shall retail certificates of analysis or similardocumentation on these commercial barium sulfate ores.Barite 4,1 shall be deemed to meet the requirements of thisInternational Standard if a composite sample representing nomore than one day's production conforms to the chemical andphysical specifications of Table 19, represents the productproduced, and is controlled by the manufacturer.Table 19 – Barite 4,10 physical and chemical requirementsRequirementDensity4,10 g/ml, minimumWater-soluble alkaline earth metals, as calcium250 mg/kg, maximumResidue greater than 75 µmMaximum mass fraction, 3,0%Particles less than 6 µm in equivalent sphericaldiameterMaximum mass fraction, 30%Note 1:8StandardEnd users should be aware that the material described in this clause has a lower density thanISO13500/API 13A, Clause 7 Barite (API Specification 13A – 20.1.3)Copyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and TestingNote 2:General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineTesting Product:Calibration bariteGrade:CalibrationProduct Information:API Specification 13A – Annex B.1.2Calibration barite and test calibration bentonite are availablethrough the API offices (see 4.2.1) for use by laboratories todetermine their test precision.Note:Calibration barite can also be found in the General Requirements Section of this PurchasingGuidelineCopyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com9
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.3BENTONITEProduct:BentoniteGrade:Drilling GradeProduct Description:API Specification 13A – 9.1.1Drilling-grade bentonite is a naturally occurring clay containingthe clay minerals of smectite. It can also contain accessoryminerals, such as quartz, mica, feldspar and calcite.API Specification 13A – 9.1.2Product PhysicalRequirements:Drilling-grade bentonite shall be deemed to meet therequirements of this International Standard if a compositesample representing no more than one day's productionconforms to the physical specifications of Table 8, representsthe product produced and is controlled by the manufacturer.Table 8 – Bentonite physical specificationsRequirementStandardSuspension properties:Viscometer dial reading at 600 r/minMinimum 30Yield point/plastic viscosity ratioMaximum 3Filtrate volumeResidue of diameter greater than 75 µmNote:10Maximum 15,0 mlMaximum mass fraction 4,0 %General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstitutePurchasing Guidelines HandbookAPI Monogram EquipmentAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and TestingProduct:BentoniteGrade:OCMAProduct Description:API Specification 13A – 11.1.1OCMA-grade bentonite is a montmorillonite-based clay which,by nature of its source, cannot meet all aspects of Clause 9.This bentonite may have been treated with soda ash, polymeror other chemicals to improve suspension propertyperformance.Product PhysicalRequirements:API Specification 13A – 11.1.2OCMA-grade bentonite shall be deemed to meet therequirements of this International Standard if acomposite sample representing no more than one day'sproduction conforms to the physical specifications ofTable 10, represents the product produced and is controlled bythe manufacturer.Product Specific MarkingRequirements:API Specification 13A – 11.1.3Manufacturers and licensees shall provide appropriatemarkings on the container in block letters at least 6 mm (0,25in) high below the name of the material, the type of treatmentof the bentonite with polymer, soda ash or other material.Table 10 – OCMA grade bentonite physical specificationsRequirementStandardSuspension properties:Viscometer dial reading at 600 r/minMinimum 30Yield point/plastic viscosity ratioMaximum 6Filtrate volume, millilitresMaximum 16,0Residue of diameter greater than 75 µmNote:Maximum 2,5 % mass fractionGeneral Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineTesting Product:Test calibration bentoniteGrade:Test calibrationProduct Information:API Specification 13A – Annex B.1.2Calibration barite and test calibration bentonite are availablethrough the API offices (see 4.2.1) for use by laboratories todetermine their test precision.Note:Test calibration barite can also be found in the Additional Requirements Section of this PurchasingGuidelineCopyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com11
American Petroleum InstitutePurchasing Guidelines HandbookAPI Monogram EquipmentAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.4NON-TREATED BENTONITEProduct:Non-treated BentoniteGrade:Drilling GradeProduct Description:API Specification 13A – 10.1.1Drilling-grade non-treated bentonite clay, composed principallyof the mineral smectite, is dried and ground, but not chemicallytreated. It can also contain accessory minerals, such asquartz, mica, feldspar and calcite.API Specification 13A – 10.1.2Product PhysicalRequirements:Drilling-grade non-treated bentonite shall be deemed to meetthe requirements of this International Standard if a compositesample representing no more than one day's productionconforms to the physical specifications of Table 9, representsthe product produced and is controlled by the manufacturer.Table 9 – Non-treated bentonite physical specificationsRequirementStandardSuspension properties:Yield point/plastic viscosity ratioMaximum 1,5Dispersed plastic viscosity, millipascal-secondsMinimum 10Dispersed filtrate volume, millilitresNote:12Maximum 12,5General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstitutePurchasing Guidelines HandbookAPI Monogram EquipmentAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.5HAEMATITEProduct:HaematiteGrade:Drilling GradeProduct Description:API Specification 13A – 8.1.1Drilling-grade haematite is produced from commercial ores,and may be a single ore or blends of haematite ores. Thehaematite ores may be a straight, mined product or processedmaterial. Minor amounts of common accessory materials, otherthan the iron oxide (Fe2O3) mineral, include silicon oxide,aluminium oxide, calcium oxide, and magnesium oxide.Product PhysicalRequirements:API Specification 13A – 8.1.2Drilling-grade haematite shall be deemed to meet therequirements of this International Standard if a compositesample representing no more than one day's productionconforms to the chemical and physical specifications of Table6, represents the product produced, and is controlled by themanufacturer.Table 6 – Haematite chemical and physical specificationsRequirementDensityWater-soluble alkaline earth metals, as calciumNote:Standard5,05 g/ml, minimum100 mg/kg, maximumResidue greater than 75 µmMaximum mass fraction 1,5 %Residue greater than 45 µmMaximum mass fraction 15 %Particles less than 6 µm in equivalent sphericaldiameterMaximum mass fraction 15 %General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com13
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.6HIGH-VISCOSITY CMC (CMC-HVT)Product:High-viscosity CMC (CMC-HVT)Grade:Technical-GradeProduct Description:API Specification 13A – 15.1.1Technical-grade high-viscosity carboxymethylcellulose (CMCHVT) is an alkali metal salt of carboxymethylcellulose. Themanufacturer shall maintain documentation of the analysis ofthe cellulosic raw material used.API Specification 13A – 15.1.2The product is a free-flowing or granulated powder and is notnormally purified of by-products formed in the reaction.Product PhysicalRequirements:API Specification 13A – 15.1.3CMC-HVT shall be deemed to meet the requirements of thisInternational Standard if a composite sample representing nomore than one day's production conforms to the physicalspecifications of Table 14, represents the product producedand is controlled by the manufacturer.Technical Requirements:Product RejectionAPI Specification 13A – 15.1.4CMC-HVT shall be free from any starch or starch derivatives.Therefore, a qualitative starch determination shall beperformed before proceeding with the CMC-HVTperformance testing. If starch is found, no further testingshould be performed and the sample shall be rejected.Table 14 – CMC-HVT physical specificationsRequirementStarch or starch derivates presenceStandardNoSolution properties:Viscometer dial reading at 600 r/min–in deionized waterMinimum 30– in 40 g/l salt solutionMinimum 30– in saturated salt waterMinimum 30Filtrate volume, millilitresNote:14Maximum 10,0General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.7LOW-VISCOSITY CMC (CMC-LVT)Product:Low-viscosity CMC (CMC-LVT)Grade:Technical-GradeProduct Description:API Specification 13A – 14.1.1Technical-grade low-viscosity carboxymethylcellulose (CMCLVT) is an alkali metal salt of carboxymethylcellulose.API Specification 13A – 14.1.2The product is a free-flowing or granulated powder.Product PhysicalRequirements:API Specification 13A – 14.1.3CMC-LVT shall be deemed to meet the requirements of thisInternational Standard if a composite sample representing nomore than one day's production conforms to the physicalspecifications of Table 13, represents the product producedand is controlled by the manufacturer.Technical Requirements:Product RejectionAPI Specification 13A – 14.1.4CMC-LVT shall be free of any starch or starch derivatives.Therefore, a qualitative starch determination shall beperformed before proceeding with the CMC-LVT performancetesting. If starch is found, no further testing should beperformed and the sample shall be rejected.Table 13 – CMC-LVT physical specificationsRequirementStarch or starch derivates presenceStandardNoSolution propertiesNote:Viscometer dial reading at 600 r/minMaximum 90Filtrate volume, millilitresMaximum 10General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com15
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.8HIGH-VISCOSITY POLYANIONIC CELLULOSE (PAC-HV)Product:High-viscosity polyanionic cellulose (PAC-HV)Grade:RegularProduct Description:API Specification 13A – 18.1.1PAC-HV, also referred to as API PAC regular grade, is awater-soluble polymer produced only from cellulosechemically reacted with carboxy-methyl (anionic) groups. Theproduct obtained is further purified to significantly increasethe active polymer content.The product is a free-flowing and/or granular powder. SeeTable 17 for physical requirements.API Specification 13A – 18.1.2PAC-HV is widely used in water-based drilling fluid for avariety of applications, such as filtration control, viscosity andshale inhibition. Although field use can vary, this procedurefocuses on filtration-control and viscosity-controlcharacteristics.Product PhysicalRequirements:API Specification 13A – 18.1.7To obtain the best handling in the field, it is recommendedthat the particle size for the PAC-HV powder be u 0,8 mm (u20 mesh).Technical Requirements:Product RejectionAPI Specification 13A – 18.1.1It shall not contain any other polysaccharides, such as starch,guar or other naturally occurring polymers or their derivatives.API Specification 13A – 18.1.4PAC-HV shall be free of any foreign polymer. Therefore, aqualitative starch determination shall be performed before theperformance tests. If starch is found, no further testing shouldbe performed and the sample shall be rejected.Table 17 – PAC-HV physical requirementsRequirementPresence of starch or starch derivativesNote:16StandardAbsentMoisture contentMaximum 10 %Apparent viscosityMinimum 50 cPAPI filtrate volumeMaximum 23 mlGeneral Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.9LOW-VISCOSITY POLYANIONIC CELLULOSE (PAC-LV)Product:Low-viscosity polyanionic cellulose (PAC-LV)Grade:Low-viscosityProduct Description:API Specification 13A – 17.1.1PAC-LV, also referred to as PAC low-viscosity grade, is awater-soluble polymer produced only from cellulosechemically reacted with carboxy-methyl (anionic) groups. Theproduct obtained is further purified to significantly increasethe active polymer content.The product is a free-flowing and/or granular powder.API Specification 13A – 17.1.2PAC-LV is widely used in water-based drilling fluids for avariety of applications, such as filtration control, viscosity andshale inhibition. Although field use can vary, this procedurefocuses on filtration control and viscosity characteristics.Product PhysicalRequirements:API Specification 13A – 17.1.7To obtain the best handling in the field, it is recommendedthat the particle size for PAC LV powder be u 0,8 mm (u 20mesh).Technical Requirements:Product RejectionAPI Specification 13A – 17.1.1It shall not contain any other polysaccharides such as starch,guar or other naturally occurring polymers or their derivatives.API Specification 13A – 17.1.4PAC-LV shall be free of any foreign polymer. Therefore, aqualitative starch determination shall be performed. If starchis found, no further testing should be performed and thesample shall be rejected.Filtrate Volume:API Specification 13A – 17.4.1.2 Footnote 13API standard evaluation base clay is an example of a suitableproduct available commercially. Requests for clay should bedirected to the API which will forward the request to a supplierfor further handling. This information is given for theconvenience of users of this Internal Standard and does notconstitute an endorsement by ISO of this product.Copyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com17
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and TestingTable 16 – PAC-LV physical requirementsRequirementPresence of starch or starch derivatives18StandardAbsentMoisture contentMaximum 10 %Apparent viscosityMaximum 40 cPFiltrate volumeMaximum 16 mlNote 1:Filtrate Volume, API Specification 13A – 17.2.1.2 Footnote 13 can also be found in the GeneralRequirements Section of this Purchasing GuidelineNote 2:General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and g GradeProduct Description:API Specification 13A – 13.1.1Drilling-grade sepiolite is a naturally occurring clay mineral.Accessory minerals include quartz, feldspar and calcite.API Specification 13A – 13.1.2Product PhysicalRequirements:Drilling-grade sepiolite shall be deemed to meet therequirements of this International Standard if a compositesample representing no more than one day's productionconforms to the physical specifications of Table 12,represents the product produced and is controlled by themanufacturer.Table 12 – Sepiolite physical specificationsRequirementStandardSuspension properties:Viscometer dial reading at 600 r/minNote:Minimum 30Residue of diameter greater than 75 µmMaximum mass fraction 8,0 %Moisture, percentMaximum mass fraction 16,0 %General Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All rights reserved.Purchase API Spec 13A online at www.global.ihs.com19
American Petroleum InstitutePurchasing Guidelines HandbookAPI Monogram EquipmentAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.11STARCHProduct:StarchGrade:Drilling GradeProduct Description:API Specification 13A – 16.1.1Drilling-grade starch can be manufactured from several kindsof native starchesAPI Specification 13A – 16.1.2Product PhysicalRequirements:Drilling-grade starch shall be free-flowing and free from lumps.Drilling-grade starch shall be deemed to meet the equirementsof this International Standard if a composite samplerepresenting no more than one day's production conforms tothe physical specifications of Table 15, represents the productproduced and is controlled by the manufacturer.Table 15 – Starch physical specificationsRequirementStandardSuspension properties:Viscometer dial reading at 600 r/min– in 40 g/l salt waterMaximum 18– in saturated salt waterMaximum 20Filtrate volume– in 40 g/l salt water, millilitresMaximum 10– in saturated salt water, millilitresMaximum 10Residue greater than 2 000 µmNote:20No residueGeneral Shipping & Marking Requirements are listed in the General Requirements Section of thisPurchasing GuidelineCopyright 2011 – American Petroleum Institute. All right reserved.Purchase API Spec 13A online at www.global.ihs.com
American Petroleum InstituteAPI Monogram EquipmentPurchasing Guidelines HandbookAPI Specification 13A 18th Edition, August 2010Specification for Drilling Fluids – Specifications and Testing2.12XANTHAN GUMProduct:Xanthan GumGrade:Drilling GradeProduct Description:API Specification 13A – 19.1.1Xanthan gum is a water-soluble polysaccha
in addition to the barium sulfate (BaSO4) mineral. Because of mineral impurities, commercial barite can vary in colour from off-white to grey to red or brown. Product Physical Requirements: API Specification 13A - 7.1.2 Drilling-grade barite shall be deemed to meet the requirements of this International Standard if a composite sample
