api additive for cement

US8470907B2 - Additive for cementing wells - Google Patents

The method of claim 2, wherein the method further comprises cementing mineral oil and natural gas wells and deep wells, wherein the cement comprises the additive, and the additive is a fluid loss additive.

API Specification for Oil-well Cements and Cement Additives

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Cement Production Documents | GCP Applied Technologies

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After three unsuccessful attempts, with 100-to 150-sack batches of API Class A Cement with a low-water-loss additive each time, to obtain squeeze pressure through the perforations a blend of 15 LB of Gilsonite per sack of cement plus a low-water-loss additive was tried and a pressure of 4, 000 psi obtained after 15 sacks were displaced into the ...

What is Slurry Yield? - Definition from Petropedia

Slurry Yield is the volume of slurry produced after mixing one sack of cement with the prescribed amount of water and binding additives as per API spec 10A. Neat cement slurry is produced when cement recommended in API spec 10A is mixed with the required amount of water and additives.

Cements and Materials for Well Cementing - API Ballots

API Spec 13A, Specification for Drilling Fluid Materials ASTM1 C109/C109M, Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens) ASTM ... additive Material added to a cement slurry to modify or enhance some desired property.

Cement slurry extenders - petrowiki.org

Neat cement slurries, when prepared from API Class A, C, G, or H cements using the amount of water recommended in API Spec. 10A will have slurry weights in excess of 15 lbm/gal. ... Lightweight additives also increase the slurry yield and can result in an economical slurry.

WO1999016723A1 - Multi-functional additive for use in well ...

First, to produce gas-tight designs using the multi-functional additive of this invention, it is necessary to add sufficient additive to lower the API Fluid Loss to level below approximately 100 cc/30min rate for a low density cement composition or approximately 50 cc/30 min rate for a high density cement …

Slurry calculations Calculation aids - Petrochem

calculations determine the proper amount of dry-blended cement and water needed for a particular job. Calculation aids. The following will help in making calculation. All additive concentrations except salt are based on the weight of cement. When using blended cement systems, the additives are based on the weight of the mixture of cements.

Additives, Chemicals, Materials - Halliburton

Additives are chemicals and materials blended into base cement slurries to alter the performance of the cement. Due to the inherent nature of base cements (Neat, Portland and Pozzolanic) and because of the demands placed on the cement sheath throughout the life of the well, the performance properties of the cementing slurry are modified to address the specific and unique conditions of each well.

Cement Chemistry and Additives - Schlumberger

cement and additives to cope with particu lar well conditions. . Portland cement was developed by Joseph Aspdin ... cements (see "Typical Properties of API Port- land Cements," below left).4 Classes A, B and C (the etters indicate a chronology) were developed in the 1950s and rated for

Water requirements - Formulas and Calculations - Netwas ...

94 lb/sk wt of additive, lb/sk c) Water requirement using material balance equation: D,V, = D2V2 Example: Class H cement plus 6% bentonite to be mixed at 14.01b/gal.

API Spec 10A (R2015) - Techstreet

This Specification is applicable to well cement classes A, B, C and D, which are the products obtained by grinding Portland cement clinker and, if needed, calcium sulfate as an interground additive. Processing additives can be used in the manufacture of cement of these classes.

API RP 10B - Recommended Practice for Testing Well Cements ...

API well cements are produced by grinding Portland cement clinker, generally consisting of hydraulic calcium silicates and aluminates and usually containing one or more of the forms of calcium sulfate as an interground addition. API cements are graded according to sulfate resistance.

Cementing Additives,Drilling Cement Additive,Cementing ...

The Cementing Additives manufactured by our company are sold in over 30 Countries worldwide. GDFCL is the leading manufacturer of the complete Range of Cementing Additives and the Prefered Supplier of most of the leading Cementing companies World Wide. We are our manufacturing facilities in Gujarat manufacture the complete range of Cement ...

A Novel Terpolymer as Fluid Loss Additive for Oil Well Cement

The fluid loss additives, which are one of the three main additives on the oil cement slurry, can effectively reduce the fluid loss of oil cement slurry in the field condition and can also increase the viscosity and improve the stability of oil cement slurry [1, 2].

TCEQ Cementing Certificate for PWS Groundwater Well ...

Gallons of water used per 94 lb. sack of cement and additives Depth of pressure cementing Date of pressure cementing API Class of cement used Additives used (bentonite, calcium chloride, etc) % of additive added to cement - % of additive added to cement - % of additive added to cement -

Team Site - cementing

To support proper slurry design utilizing TES' complete line of cement additives, state-of-the-art API cement laboratories have been built in each district. Each of these labs have quality control systems installed to continuously monitor the quality of additives, cements and mix waters before they are actually used on the job.

(PDF) Smart Cements and cement Additives for oil and gas ...

Smart Cements and cement Additives for oil and gas Operations. Article ... (API RP . 13B-1, 1995). The classification is simil ar to ASTM C 150, Ty pe I (ASTM C150-00, 2001). These classes are ...

API Specification for Oil-well Cements - OnePetro

The API specification discussed in this paper contains a set of physical and chemical requirements constituted specifically to cover those properties needed in the cementing of oil and gas wells It includes also a system of classifying and identifying portland cement In terms related to well-cementing operations The system provides for seven ...

Cement composition and classification - petrowiki.org

This product is intended for use as a basic well cement. Available in MSR and HSR grades. Properties of cement covered by API specifications. Chemical properties and physical requirements are summarized in Tables 3 and Table 4, respectively. Typical physical requirements of the various API classes of cement are shown in Table 5.

3. API Cements and Additives | Materials | Manmade Materials

Cement slurries are capable of transmitting hydrostatic pressure. A powdered additive may be used to minimize the length of time the cement is in the gel state.API Cements and Additives Cement Dispersants or Friction Reducers Dispersing agents are added to cement …

3. API Cements and Additives | Materials | Manmade Materials

Cement Additives Learning Objectives Upon completion of the section. 3•3 Cementing 1 . This unit will cover • • API Classification Manufacturing and Composition • • • • • API Class A and B (Portland cement) API Class C (High early strength cement) API Class D. API Cements and Additives Table 3.

SPE Distinguished Lecturer Program

The SPE Distinguished Lecturer Program is funded principally through a ... – Common cement – API classes A, B, C • Retarded cements – Deeper wells ... Dry Additives Cement Bulk Blend. 8 15 Handling Dry Cement • From cutting sacks to pneumatic handling – Storage – Transport

API cement - Schlumberger Oilfield Glossary

One of several classes of cement manufactured to the specifications of the American Petroleum Institute (API) Specification 10A.Classes of API cement are A, B, C, D ...


ADDING SCMs TO PORTLAND CEMENT: IMPACT ON OILWELL CEMENTING ADDITIVE PERFORMANCE Tom Dealy, Halliburton; Bill Carruthers, Lafarge North America ... common oilwell cement additives such as fluid-loss control additives, dispersants, and retarders. ... temperature gradient chart of Schedule 9.6 from the API Recommended Practices 10B (API RP 10B ...

Api Cement Early Strength Additive China Manufacturers ...

Api Cement Early Strength Additive - Manufacturers, Factory, Suppliers From China. We retain bettering and perfecting our merchandise and service. At the same time, we do the job actively to do research and improvement for Api Cement Early Strength Additive, Cement Friction Reducer Agent, Drilling Fluid Additive, Well Cementation Fluids For ...

Water Requirements and Specific Gravity of Common Cement ...

Table 2-1 (continued) Water Requirements and Specific Gravity of Common Cement Additives. Water Requirement gal/94 lb/sk Specific Gravity. Table 2-1 (continued) Water Requirements and Specific Gravity of Common Cement Additives

Oilfield Cement - New Mexico Institute of Mining and ...

Classes of cement (table3.3) API has 8 classes of cement A-H . Also have sulfate-resistant MSR HSR . With the proper additives cement can be made to met all down hole conditions. Class C for shallow jobs, classes G & H for most other conditions.

API CLASS G CEMENT - Page 1 of 1

api class g cement. we are in the supply of bagged cement for more than 15years. we can offer ordinary portland cement, white portland cement, oil well cement. our oil well cement has gained the api class g hsr certification. and we have supplied to aisan and africa countries.

Fluid Loss Additives - Halliburton

Halad-766 fluid-loss additive is a derivitatized cellose that can be used for fluid loss and retardation in all API cement classes as well as Pozmix® cement. The tables below list the product specifications and part numbers for Halad-766 fluid-loss additive.

Oil Well Cement Additives ... - made-in-china.com

China Oil Well Cement Additives manufacturers - Select 2018 high quality Oil Well Cement Additives products in best price from certified Chinese Plastic To Oil manufacturers, Plastic To Oil Machine suppliers, wholesalers and factory on Made-in-China.com