CN111909669A - Compound bentonite raw material for seawater drilling fluid and preparation method and application thereof - Google Patents
Compound bentonite raw material for seawater drilling fluid and preparation method and application thereof Download PDFInfo
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- CN111909669A CN111909669A CN202010644061.7A CN202010644061A CN111909669A CN 111909669 A CN111909669 A CN 111909669A CN 202010644061 A CN202010644061 A CN 202010644061A CN 111909669 A CN111909669 A CN 111909669A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
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Abstract
The invention relates to a compound bentonite raw material for seawater drilling fluid, a preparation method and application thereof, and belongs to the technical field of seawater drilling fluid. The compound bentonite raw material for the seawater drilling fluid comprises the following components in parts by weight: sodium bentonite: 1000 parts of (A); anionic cellulose: 38-42 parts; sodium carbonate: 18-22 parts; xanthan gum: 8-12 parts; fluid loss additive: 8-12 parts; guar gum: 6-10 parts; polyacrylamide: 0.3-0.5 parts and preservative: 0.08-0.12 part. The invention also provides a preparation method and application of the compound bentonite raw material for the seawater drilling fluid. The seawater drilling fluid prepared from the compound bentonite raw material for the seawater drilling fluid has slow fermentation speed, and does not have obvious phenomena of blackening, stink changing and performance index reduction within 6-8 months.
Description
Technical Field
The invention belongs to the technical field of seawater drilling fluid, and particularly relates to a compound bentonite raw material for seawater drilling fluid, and a preparation method and application thereof.
Background
The seawater drilling fluid is mainly applied to drilling engineering in deep sea oil and gas drilling development, and the performance of the seawater drilling fluid directly influences the quality, cost, period and the like of deep water drilling. Wherein, the bentonite is a main slurry preparation material for preparing the seawater drilling fluid. The bentonite and the seawater are mixed and stirred to prepare the seawater drilling fluid. Seawater drilling fluid has been increasingly used in the field of horizontal directional drilling and crossing construction for several years.
However, the seawater drilling fluid prepared from the existing seawater bentonite and seawater is easy to ferment in the use process, generally becomes black and smelly after 7-14 days, and the performance index is obviously reduced, so that the seawater drilling fluid needs to be prepared again, the cost of a drilling or directional drilling project is increased, the quality of the drilling is influenced, and the period is prolonged.
Disclosure of Invention
The invention provides a compound bentonite raw material for seawater drilling fluid, a preparation method and application thereof, aiming at solving the technical problems.
The invention provides a compound bentonite raw material for seawater drilling fluid in order to solve the technical problems.
The technical scheme for solving the technical problems is as follows: a compound bentonite raw material for seawater drilling fluid is composed of the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 38-42 parts; sodium carbonate: 18-22 parts; xanthan gum: 8-12 parts; fluid loss additive: 8-12 parts; guar gum: 6-10 parts; polyacrylamide: 0.3-0.5 parts and preservative: 0.08-0.12 part.
The invention has the beneficial effects that:
(1) the compound bentonite raw material can be prepared into seawater drilling fluid with seawater, the fermentation speed is slow, and obvious blackening, odor changing and performance index reduction phenomena can not occur within 6-8 months;
(2) the compound bentonite raw material can prolong the service time of the seawater drilling fluid, reduce the waste amount of the seawater drilling fluid, reduce the slurry preparation cost and reduce the treatment cost of the waste seawater drilling fluid.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the paint comprises the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 39-41 parts; sodium carbonate: 19-21 parts; xanthan gum: 9-11 parts; fluid loss additive: 9-12 parts of a solvent; guar gum: 7-9 parts; polyacrylamide: 0.35-0.45 parts and preservative: 0.09-0.11 part.
The beneficial effect of adopting the further scheme is that: the anti-deterioration effect is better, and the situation of blackening and smelling can not occur.
Further, the paint comprises the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 40 parts of a mixture; sodium carbonate: 20 parts of (1); xanthan gum: 10 parts of (A); fluid loss additive: 10 parts of (A); guar gum: 8 parts of a mixture; polyacrylamide: 0.4 part and preservative: 0.1 part.
The beneficial effect of adopting the further scheme is that: the anti-deterioration effect is better, and the situation of blackening and smelling can not occur.
Further, the filtrate reducer is an HM-modified polymer filtrate reducer.
The beneficial effect of adopting the further scheme is that: the filtration loss is reduced.
Further, the preservative is copper sulfate.
The beneficial effect of adopting the further scheme is that: the anti-deterioration effect is better, and the situation of blackening and smelling can not occur.
Secondly, the invention provides a preparation method of the compound bentonite raw material for the seawater drilling fluid in order to solve the technical problems.
The technical scheme for solving the technical problems is as follows: a preparation method of a compound bentonite raw material for seawater drilling fluid comprises the following steps:
taking the following raw materials in parts by weight: sodium bentonite: 1000 parts of (A); anionic cellulose: 38-42 parts; sodium carbonate: 18-22 parts; xanthan gum: 8-12 parts; fluid loss additive: 8-12 parts; guar gum: 6-10 parts; polyacrylamide: 0.3-0.5 parts and preservative: 0.08-0.12 part of bentonite, and uniformly stirring and mixing to obtain the compound bentonite raw material for the seawater drilling fluid.
The preparation method of the invention has the beneficial effects that: the preparation method is simple, is beneficial to popularization and use, has low manufacturing cost, and can reduce the cost of enterprises.
Thirdly, the invention provides the application of the compound bentonite raw material for the seawater drilling fluid in order to solve the technical problems.
The technical scheme for solving the technical problems is as follows: a seawater drilling fluid comprises the compound bentonite raw material for the seawater drilling fluid.
The seawater drilling fluid has the beneficial effects that: the deterioration resistance is good, the performance can not be reduced after the drill pipe is placed for 6-8 months, and the drilling and production cost is reduced.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
Example 1
The embodiment provides a compound bentonite raw material for seawater drilling fluid, which comprises the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 38 parts of (B); sodium carbonate: 18 parts of a mixture; xanthan gum: 8 parts of a mixture; HM-modified polymer filtrate reducer: 8 parts of a mixture; guar gum: 6 parts of (1); polyacrylamide: 0.3 part and copper sulfate: 0.08 portion.
The embodiment also provides a preparation method of the compound bentonite raw material for the seawater drilling fluid, which comprises the following steps:
taking the following raw materials in parts by weight: 1000 parts of (A); anionic cellulose: 38 parts of (B); sodium carbonate: 18 parts of a mixture; xanthan gum: 8 parts of a mixture; HM-modified polymer filtrate reducer: 8 parts of a mixture; guar gum: 6 parts of (1); polyacrylamide: 0.3 part and copper sulfate: 0.08 portion, and evenly stirring and mixing to obtain the compound bentonite raw material for the seawater drilling fluid.
Wherein the anionic cellulose is a product produced by Hebei Hai West chemical engineering Co.
Xanthan gum is a product produced by santaluang chemical products limited in Shandong.
The HM-modified high-molecular filtrate reducer is a product produced by Shandong Shenghuang chemical products, Inc.
Guar gum is a product produced by Hebei Hai xi chemical industry Co.
The polyacrylamide is a product produced by a Longquan chemical plant in Yanggu county.
The embodiment also provides the seawater drilling fluid, which comprises the compound bentonite raw material for the seawater drilling fluid, and the compound bentonite raw material for the seawater drilling fluid is mixed with seawater to prepare slurry, so that the seawater drilling fluid is obtained.
Example 2
The embodiment provides a compound bentonite raw material for seawater drilling fluid, which comprises the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 42 parts of (A); sodium carbonate: 22 parts of (A); xanthan gum: 12 parts of (1); HM-modified polymer filtrate reducer: 12 parts of (1); guar gum: 10 parts of (A); polyacrylamide: 0.5 part and copper sulfate: 0.12 part.
The embodiment also provides a preparation method of the compound bentonite raw material for the seawater drilling fluid, which comprises the following steps:
taking the following raw materials in parts by weight: sodium bentonite: 1000 parts of (A); anionic cellulose: 42 parts of (A); sodium carbonate: 22 parts of (A); xanthan gum: 12 parts of (1); HM-modified polymer filtrate reducer: 12 parts of (1); guar gum: 10 parts of (A); polyacrylamide: 0.5 part and copper sulfate: 0.12 part of bentonite, and stirring and mixing uniformly to obtain the compound bentonite raw material for the seawater drilling fluid.
Wherein the anionic cellulose is a product produced by Hebei Yanxinghe chemical company Limited.
Xanthan gum is a product produced by chemical products of han hua shuo, inc.
The HM-modified polymer filtrate reducer is a product produced by Hebei Yanxinghe chemical company Limited.
Guar gum is a product produced by the Longquan chemical plant in Yanggu county.
Polyacrylamide is a product produced by Zibowan respecting environmental protection materials Co.
The embodiment also provides the seawater drilling fluid, which comprises the compound bentonite raw material for the seawater drilling fluid, and the compound bentonite raw material for the seawater drilling fluid is mixed with seawater to prepare slurry, so that the seawater drilling fluid is obtained.
Example 3
The embodiment provides a compound bentonite raw material for seawater drilling fluid, which comprises the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 40 parts of a mixture; sodium carbonate: 20 parts of (1); xanthan gum: 10 parts of (A); HM-modified polymer filtrate reducer: 10 parts of (A); guar gum: 8 parts of a mixture; polyacrylamide: 0.4 part and copper sulfate: 0.1 part.
The embodiment also provides a preparation method of the compound bentonite raw material for the seawater drilling fluid, which comprises the following steps:
taking the following raw materials in parts by weight: sodium bentonite: 1000 parts of (A); anionic cellulose: 40 parts of a mixture; sodium carbonate: 20 parts of (1); xanthan gum: 10 parts of (A); HM-modified polymer filtrate reducer: 10 parts of (A); guar gum: 8 parts of a mixture; polyacrylamide: 0.4 part and copper sulfate: 0.1 part of bentonite, and stirring and mixing uniformly to obtain the compound bentonite raw material for the seawater drilling fluid.
Wherein the anionic cellulose is a product produced by Hebei Yanxinghe chemical company Limited.
Xanthan gum is a product produced by chemical products of han hua shuo, inc.
The HM-modified polymer filtrate reducer is a product produced by Hebei Yanxinghe chemical company Limited.
Guar gum is a product produced by the Longquan chemical plant in Yanggu county.
Polyacrylamide is a product produced by Zibowan respecting environmental protection materials Co.
The embodiment also provides the seawater drilling fluid, which comprises the compound bentonite raw material for the seawater drilling fluid, and the compound bentonite raw material for the seawater drilling fluid is mixed with seawater to prepare slurry, so that the seawater drilling fluid is obtained.
Example 4
The embodiment provides a compound bentonite raw material for seawater drilling fluid, which comprises the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 39 parts of a mixture; sodium carbonate: 19 parts of a mixture; xanthan gum: 9 parts of (1); HM-modified polymer filtrate reducer: 9 parts of (1); guar gum: 7 parts; polyacrylamide: 0.35 parts and copper sulfate: 0.09 part.
The embodiment also provides a preparation method of the compound bentonite raw material for the seawater drilling fluid, which comprises the following steps:
taking the following raw materials in parts by weight: sodium bentonite: 1000 parts of (A); anionic cellulose: 39 parts of a mixture; sodium carbonate: 19 parts of a mixture; xanthan gum: 9 parts of (1); HM-modified polymer filtrate reducer: 9 parts of (1); guar gum: 7 parts; polyacrylamide: 0.35 parts and copper sulfate: 0.09 portion, and evenly stirring and mixing to obtain the compound bentonite raw material for the seawater drilling fluid.
Wherein the anionic cellulose is a product produced by Hebei Yanxinghe chemical company Limited.
Xanthan gum is a product produced by chemical products of han hua shuo, inc.
The HM-modified polymer filtrate reducer is a product produced by Hebei Yanxinghe chemical company Limited.
Guar gum is a product produced by the Longquan chemical plant in Yanggu county.
Polyacrylamide is a product produced by Zibowan respecting environmental protection materials Co.
The embodiment also provides the seawater drilling fluid, which comprises the compound bentonite raw material for the seawater drilling fluid, and the compound bentonite raw material for the seawater drilling fluid is mixed with seawater to prepare slurry, so that the seawater drilling fluid is obtained.
Example 5
The embodiment provides a compound bentonite raw material for seawater drilling fluid, which comprises the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 41 parts of (1); sodium carbonate: 21 parts of (1); xanthan gum: 11 parts of (1); HM-modified polymer filtrate reducer: 12 parts of (1); guar gum: 9 parts of (1); polyacrylamide: 0.45 part and copper sulfate: 0.11 part.
The embodiment also provides a preparation method of the compound bentonite raw material for the seawater drilling fluid, which comprises the following steps:
taking the following raw materials in parts by weight: sodium bentonite: 1000 parts of (A); anionic cellulose: 41 parts of (1); sodium carbonate: 21 parts of (1); xanthan gum: 11 parts of (1); HM-modified polymer filtrate reducer: 12 parts of (1); guar gum: 9 parts of (1); polyacrylamide: 0.45 part and copper sulfate: 0.11 part of bentonite, and stirring and mixing uniformly to obtain the compound bentonite raw material for the seawater drilling fluid.
Wherein the anionic cellulose is a product produced by Hebei Yanxinghe chemical company Limited.
Xanthan gum is a product produced by chemical products of han hua shuo, inc.
The HM-modified polymer filtrate reducer is a product produced by Hebei Yanxinghe chemical company Limited.
Guar gum is a product produced by the Longquan chemical plant in Yanggu county.
Polyacrylamide is a product produced by Zibowan respecting environmental protection materials Co.
The embodiment also provides the seawater drilling fluid, which comprises the compound bentonite raw material for the seawater drilling fluid, and the compound bentonite raw material for the seawater drilling fluid is mixed with seawater to prepare slurry, so that the seawater drilling fluid is obtained.
The compound bentonite raw materials for the seawater drilling fluid prepared in the examples 1 to 5 are detected, and the viscosity, the dynamic-plastic ratio, the filtration loss and the stability are specifically detected according to the drilling fluid material specification GBT 5005-2010. The specific test results are shown in Table 1.
The dynamic-plastic ratio refers to the ratio of the drilling fluid dynamic shear force to the plastic viscosity.
The fluid loss is determined by the pressure difference of the slurry at 0.69MPa (API standard of 100 pounds/inch 2 ≈ 7 kg/cm)2) The amount of filtrate lost through a 75mm diameter filtration area (typically filter paper is used as the permeation medium) within 30min is referred to as the fluid loss (or water loss).
The compound bentonite raw materials for the seawater drilling fluid prepared in the examples 1 to 5 are detected, and the performance of the compound bentonite raw materials is specifically detected according to the drilling fluid material specification GBT 5005-2010.
Table 1 results of basic data testing of compounded bentonite raw material for seawater drilling fluid prepared in examples 1 to 5
The modified bentonite raw material for the seawater drilling fluid prepared in the examples 1 to 5 was subjected to the deterioration time detection. The specific test results are shown in Table 2.
Table 2 test results of deterioration time of raw material of compounded bentonite for seawater drilling fluid prepared in examples 1 to 5
As can be seen from Table 1, the raw materials of the compounded bentonite for seawater drilling fluid prepared in examples 1 to 5 meet the requirements for preparing seawater drilling fluid.
As can be seen from Table 2, the common seawater drilling fluid is easy to ferment in the use process, usually begins to change color in 7-14 days, and has performance index reduction, so that the mud cannot be used continuously.
The seawater drilling fluid prepared from the compound bentonite raw material for the seawater drilling fluid and seawater prepared in the embodiments 1-5 of the invention has slow fermentation speed, and does not have obvious phenomena of blackening, stinking and performance index reduction within 6-8 months. The service time of the seawater drilling fluid is prolonged, and the waste amount of the seawater drilling fluid is reduced. The slurry preparation cost is reduced, and the waste seawater drilling fluid treatment cost is reduced.
It is to be noted that "comprising" in the present invention means that it may include other components in addition to the components described, and the "comprising" may be replaced with "being" or "consisting of … …" in a closed manner.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A compound bentonite raw material for seawater drilling fluid is characterized by comprising the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 38-42 parts; sodium carbonate: 18-22 parts; xanthan gum: 8-12 parts; fluid loss additive: 8-12 parts; guar gum: 6-10 parts; polyacrylamide: 0.3-0.5 parts and preservative: 0.08-0.12 part.
2. The compound bentonite raw material for the seawater drilling fluid as claimed in claim 1, which is characterized by comprising the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 39-41 parts; sodium carbonate: 19-21 parts; xanthan gum: 9-11 parts; fluid loss additive: 9-12 parts of a solvent; guar gum: 7-9 parts; polyacrylamide: 0.35-0.45 parts and preservative: 0.09-0.11 part.
3. The compound bentonite raw material for the seawater drilling fluid as claimed in claim 1, which is characterized by comprising the following components in parts by weight:
sodium bentonite: 1000 parts of (A); anionic cellulose: 40 parts of a mixture; sodium carbonate: 20 parts of (1); xanthan gum: 10 parts of (A); fluid loss additive: 10 parts of (A); guar gum: 8 parts of a mixture; polyacrylamide: 0.4 part and preservative: 0.1 part.
4. The compounded bentonite raw material for the seawater drilling fluid as defined in any one of claims 1 to 3, wherein the fluid loss additive is an HM-modified high polymer fluid loss additive.
5. The compound bentonite raw material for the seawater drilling fluid as claimed in any one of claims 1 to 3, wherein the preservative is copper sulfate.
6. A preparation method of a compound bentonite raw material for seawater drilling fluid is characterized by comprising the following steps:
taking the following raw materials in parts by weight: sodium bentonite: 1000 parts of (A); anionic cellulose: 38-42 parts; sodium carbonate: 18-22 parts; xanthan gum: 8-12 parts; fluid loss additive: 8-12 parts; guar gum: 6-10 parts; polyacrylamide: 0.3-0.5 parts and preservative: 0.08-0.12 part of bentonite, and uniformly stirring and mixing to obtain the compound bentonite raw material for the seawater drilling fluid.
7. A seawater drilling fluid, characterized by comprising the compound bentonite raw material for seawater drilling fluid according to any one of claims 1 to 5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010644061.7A CN111909669A (en) | 2020-07-06 | 2020-07-06 | Compound bentonite raw material for seawater drilling fluid and preparation method and application thereof |
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| CN202010644061.7A CN111909669A (en) | 2020-07-06 | 2020-07-06 | Compound bentonite raw material for seawater drilling fluid and preparation method and application thereof |
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Cited By (1)
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| CN113502147A (en) * | 2021-07-02 | 2021-10-15 | 句容康泰膨润土有限公司 | Preparation method of bentonite for environment-friendly drilling fluid |
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