CN112029484A - Flow pattern regulator for drilling fluid - Google Patents

Flow pattern regulator for drilling fluid Download PDF

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Publication number
CN112029484A
CN112029484A CN202010903882.8A CN202010903882A CN112029484A CN 112029484 A CN112029484 A CN 112029484A CN 202010903882 A CN202010903882 A CN 202010903882A CN 112029484 A CN112029484 A CN 112029484A
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China
Prior art keywords
addition amount
drilling fluid
flow pattern
tackifier
synergist
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Pending
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CN202010903882.8A
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Chinese (zh)
Inventor
朱文超
刘继刚
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Wuhan Siyue Chemical Technology Co ltd
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Wuhan Siyue Chemical Technology Co ltd
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Priority to CN202010903882.8A priority Critical patent/CN112029484A/en
Publication of CN112029484A publication Critical patent/CN112029484A/en
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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
    • C09K8/03—Specific additives for general use in well-drilling compositions
    • 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
    • C09K8/03—Specific additives for general use in well-drilling compositions
    • C09K8/035—Organic additives
    • 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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • C09K8/36—Water-in-oil emulsions
    • 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
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
    • 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
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/44—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

The invention discloses a flow pattern regulator for drilling fluid, which comprises a natural asphalt chemical modifier, a synergist, a defoaming agent, a tackifier and a filtrate reducer, wherein the flow pattern regulator comprises the following components in percentage by mass: the addition amount of the natural asphalt chemical modifier is 0.3-1%, the addition amount of the synergist is 0.1-0.7%, the addition amount of the defoaming agent is 0.1-0.3%, the addition amount of the tackifier is 0-0.4%, the addition amount of the filtrate reducer is 0-0.2%, and the balance is deionized water. The flow pattern regulator for the drilling fluid can reduce the percolation amount of a high-permeability stratum, has a good plugging effect, is recommended to be added, reduces the filtration loss of the oil-based drilling fluid, stabilizes a well wall, prevents cracks from opening, improves the oil wettability of a solid phase, improves the emulsion breaking voltage, enhances the performance stability of the oil-based drilling fluid, effectively plugs micron-sized cracks with micron-sized particle size, and has a good plugging effect while drilling.

Description

Flow pattern regulator for drilling fluid
Technical Field
The invention relates to the technical field of drilling fluid regulators, in particular to a flow pattern regulator for drilling fluid.
Background
The oil-based cobalt well fluid has the advantages of excellent lubricating property, strong inhibition, good well wall stability, good temperature resistance and the like, and is widely applied 01.2. However, as petroleum exploration and development develop into deep stratum and sea, the stratum conditions are increasingly complex to be drilled, the drilling depth is increased, and the difficulty of drilling and completing the well is greater, so that higher requirements are provided for the oil-based drilling fluid technology, particularly for the regulation and control of the rheological property of the oil-based drilling fluid at high temperature. At present, organic soil is mainly adopted to regulate and control rheological property of the oil-based drilling fluid on site, but the organic soil is slow to activate, so that the problems of excessive thickening of the drilling fluid, poor plugging effect and the like in the drilling process are easily caused.
Disclosure of Invention
The invention aims to provide a flow pattern regulator for drilling fluid, aiming at the problems in the prior art, the flow pattern regulator for drilling fluid in the current market mainly adopts organic soil to regulate and control the rheological property of oil-based drilling fluid, but the organic soil is slow to activate, so that the problems of excessive thickening of the drilling fluid and poor plugging effect in the drilling process are easily caused.
The technical scheme of the invention is as follows: a flow pattern regulator for drilling fluid comprises a natural asphalt chemical modifier, a synergist, a defoaming agent, a tackifier and a filtrate reducer, and is prepared by weighing the following components in percentage by mass:
the addition amount of the natural asphalt chemical modifier is 0.3-1%;
the addition amount of the synergist is 0.1-0.7%;
the addition amount of the defoaming agent is 0.1-0.3%;
the addition amount of the tackifier is 0.1-0.4%;
the addition amount of the filtrate reducer is 0.1-0.2%;
the balance being deionized water.
Further, the flow pattern regulator for the drilling fluid is prepared by weighing the following components in percentage by mass:
the addition amount of the natural asphalt chemical modifier is 0.3-0.6%;
the addition amount of the synergist is 0.1-0.5%;
the addition amount of the defoaming agent is 0.1-0.2%;
the addition amount of the tackifier is 0.1-0.2%;
the addition amount of the filtrate reducer is 0.1-0.1%;
the balance being deionized water.
Further, the flow pattern regulator for the drilling fluid is prepared by weighing the following components in percentage by mass:
the addition amount of the natural asphalt chemical modifier is 0.3-0.8%;
the addition amount of the synergist is 0.1-0.3%;
the addition amount of the defoaming agent is 0.1-0.3%;
the addition amount of the tackifier is 0.1-0.3%;
the addition amount of the filtrate reducer is 0.1-0.2%;
the balance being deionized water.
Further, the natural asphalt chemical modifier is a powdery solid made of natural asphalt.
Further, the tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.
Further, the defoaming agent is polydimethylsiloxane.
Further, the synergist is a builder Z6 type tackifier.
Further, the fluid loss additive is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl starch.
Further, the cleaning agent also comprises a wetting agent, and the HLB value is 7-9.
The invention has the beneficial effects that: the flow pattern regulator for the drilling fluid can reduce the percolation amount of a high-permeability stratum and has a good plugging effect;
1. the filtration loss of the oil-based drilling fluid is reduced, the well wall is stabilized, and cracks are prevented from being opened;
2. improving the oil wettability of the solid phase;
3. the demulsification voltage is improved, and the performance stability of the oil-based drilling fluid is enhanced;
4. the micron-sized particle size effectively seals micron-sized cracks, and the leak stoppage effect while drilling is good.
Detailed Description
The invention is described in detail below with reference to specific examples:
example 1
A flow pattern regulator for drilling fluid comprises a natural asphalt chemical modifier, a synergist, a defoaming agent, a tackifier and a filtrate reducer, and is prepared by weighing the following components in percentage by mass:
the addition amount of the natural asphalt chemical modifier is 0.3 percent;
the addition amount of the synergist is 0.1 percent;
the addition of the defoaming agent is 0.1 percent;
the addition amount of the tackifier is 0.1 percent;
the addition amount of the filtrate reducer is 0.1 percent;
the balance being deionized water.
The chemical modifier of natural asphalt is a powdery solid made of natural asphalt.
The tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.
The defoaming agent is polydimethylsiloxane.
The synergist is a Zhusongjie Z6 type tackifier.
The fluid loss additive is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl starch.
A wetting agent is also included, and the HLB value is 7.
Example 2
A flow pattern regulator for drilling fluid comprises a natural asphalt chemical modifier, a synergist, a defoaming agent, a tackifier and a filtrate reducer, and is prepared by weighing the following components in percentage by mass:
the addition amount of the natural asphalt chemical modifier is 0.6 percent;
the addition amount of the synergist is 0.2 percent;
the addition of the defoaming agent is 0.1 percent;
the addition amount of the tackifier is 0.2 percent;
the addition amount of the filtrate reducer is 0.1 percent;
the balance being deionized water.
The chemical modifier of natural asphalt is a powdery solid made of natural asphalt.
The tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.
The defoaming agent is polydimethylsiloxane.
The synergist is a Zhusongjie Z6 type tackifier.
The fluid loss additive is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl starch.
A wetting agent is also included, and the HLB value is 8.
Example 3
A flow pattern regulator for drilling fluid comprises a natural asphalt chemical modifier, a synergist, a defoaming agent, a tackifier and a filtrate reducer, and is prepared by weighing the following components in percentage by mass:
the addition amount of the natural asphalt chemical modifier is 0.8 percent;
the addition amount of the synergist is 0.3 percent;
the addition amount of the defoaming agent is 0.2 percent;
the addition amount of the tackifier is 0.1 percent;
the addition amount of the filtrate reducer is 0.2 percent;
the balance being deionized water.
The chemical modifier of natural asphalt is a powdery solid made of natural asphalt.
The tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.
The defoaming agent is polydimethylsiloxane.
The synergist is a Zhusongjie Z6 type tackifier.
The fluid loss additive is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl starch.
A wetting agent is also included, and the HLB value is 9.
Evaluation of plugging Effect
3% COFL @ normal temperature and medium pressure of a permeable sand bed, and the invasion depth of 30mins is 0.94 cm;
permeable sand bed 3% COFL @ high temperature and pressure (120 ℃).
As is clear from Table 1, the characteristics described in examples 1 to 3
1. In an 3 oil-based (W/0) drilling fluid system with the density of 1.80g/cm, aging is carried out for 24 hours at 180 ℃, and the HTHP filtration loss of 30mins is less than 8.0ml under the test condition of pressure difference of 120 ℃ and 3.5 MPa;
2. is generally applicable to diesel/white oil based (water-in-oil) drilling fluid;
3. the highest temperature resistance reaches 230 ℃;
4. the softening point has broad spectrum and is moderately softened at 120-160 ℃;
5. according to the technical requirements, the particle size grade and the softening point can be adjusted.
TABLE 1
Figure BDA0002660710880000051
Micro-crack plugging and compression evaluation 3% COFL @120 deg.C
As is clear from Table 2, the characteristics described in examples 1 to 3
Can effectively plug and prevent 100-300 um microcrack leakage, and the pressure-bearing reaches 20 MPa.
The plugging technology is required to be adopted for more than 400 um. Non-viable cells
TABLE 2
Figure BDA0002660710880000052
Figure BDA0002660710880000061
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (9)

1. A flow pattern regulator for drilling fluid comprises a natural asphalt chemical modifier, a synergist, a defoaming agent, a tackifier and a filtrate reducer, and is characterized in that: weighing the following components in percentage by mass:
the addition amount of the natural asphalt chemical modifier is 0.3-1%;
the addition amount of the synergist is 0.1-0.7%;
the addition amount of the defoaming agent is 0.1-0.3%;
the addition amount of the tackifier is 0.1-0.4%;
the addition amount of the filtrate reducer is 0.1-0.2%;
the balance being deionized water.
2. The flow pattern modifier for drilling fluid according to claim 1, wherein:
the addition amount of the natural asphalt chemical modifier is 0.3-0.6%;
the addition amount of the synergist is 0.1-0.5%;
the addition amount of the defoaming agent is 0.1-0.2%;
the addition amount of the tackifier is 0.1-0.2%;
the addition amount of the filtrate reducer is 0.1-0.2%;
the balance being deionized water.
3. The flow pattern modifier for drilling fluid according to claim 1, wherein:
the addition amount of the natural asphalt chemical modifier is 0.3-0.8%;
the addition amount of the synergist is 0.1-0.3%
The addition amount of the defoaming agent is 0.1-0.3%;
the addition amount of the tackifier is 0.1-0.3%;
the addition amount of the filtrate reducer is 0.1-0.2%;
the balance being deionized water.
4. A flow pattern modifier for drilling fluid according to any one of claims 1 to 3, wherein: the chemical modifier of the natural asphalt is powdery solid made of the natural asphalt.
5. A flow pattern modifier for drilling fluid according to any one of claims 1 to 3, wherein: the tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.
6. A flow pattern modifier for drilling fluid according to any one of claims 1 to 3, wherein: the defoaming agent is polydimethylsiloxane.
7. A flow pattern modifier for drilling fluid according to any one of claims 1 to 3, wherein: the synergist is a Zhuchengjie Z6 type tackifier.
8. A flow pattern modifier for drilling fluid according to any one of claims 1 to 3, wherein: the fluid loss additive is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl starch.
9. A flow pattern modifier for drilling fluid according to any one of claims 1 to 3, wherein: the adhesive also comprises a wetting agent, and the HLB value is 7-9.
CN202010903882.8A 2020-09-01 2020-09-01 Flow pattern regulator for drilling fluid Pending CN112029484A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113653452A (en) * 2021-09-09 2021-11-16 中国石油大学(北京) Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103045210A (en) * 2013-01-18 2013-04-17 中国石油化工股份有限公司 High-efficiency plugging oil-base drilling fluid and preparation method thereof
CN103184038A (en) * 2011-12-29 2013-07-03 中国石油化工股份有限公司 Environment-friendly low solid phase oil-base drilling and completion fluids and preparation methods
CN111139044A (en) * 2020-01-07 2020-05-12 成都西油华巍科技有限公司 Composite emulsifier for oil-based drilling fluid and high-temperature-resistant ultrahigh-density oil-based drilling fluid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103184038A (en) * 2011-12-29 2013-07-03 中国石油化工股份有限公司 Environment-friendly low solid phase oil-base drilling and completion fluids and preparation methods
CN103045210A (en) * 2013-01-18 2013-04-17 中国石油化工股份有限公司 High-efficiency plugging oil-base drilling fluid and preparation method thereof
CN111139044A (en) * 2020-01-07 2020-05-12 成都西油华巍科技有限公司 Composite emulsifier for oil-based drilling fluid and high-temperature-resistant ultrahigh-density oil-based drilling fluid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113653452A (en) * 2021-09-09 2021-11-16 中国石油大学(北京) Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof
CN113653452B (en) * 2021-09-09 2022-10-25 中国石油大学(北京) Oil-based drilling mixture reinjection composition, oil-based drilling mixture reinjection slurry, and preparation method and application thereof

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Application publication date: 20201204