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Flow pattern regulator for drilling fluid

A technology of flow pattern regulator and drilling fluid, which is applied in the directions of drilling compositions, chemical instruments and methods, etc., can solve the problems of slow activation of organic soil, poor plugging effect, excessive thickening of drilling fluid, etc. Good, good plugging effect, the effect of reducing the amount of percolation

Pending Publication Date: 2020-12-04
武汉思越化学技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a flow regulator for drilling fluid in view of the problems existing in the prior art. Currently, the flow regulator for drilling fluid on the market mainly uses organic soil to regulate the rheology of oil-based drilling fluid, but organic soil The activation is slow, and it is easy to cause excessive thickening of the drilling fluid and poor plugging effect during the drilling process.

Method used

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  • Flow pattern regulator for drilling fluid
  • Flow pattern regulator for drilling fluid
  • Flow pattern regulator for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A flow regulator for drilling fluid, comprising natural asphalt chemical modifiers, synergists, defoamers, viscosifiers and fluid loss reducers, each component is weighed according to the following mass percentage composition:

[0039] The addition amount of natural asphalt chemical modification is 0.3%;

[0040] The addition amount of synergist is 0.1%;

[0041] The addition of defoamer is 0.1%;

[0042] The addition of tackifier is 0.1%;

[0043] The addition amount of fluid loss reducer is 0.1%;

[0044] The balance is deionized water.

[0045] The natural asphalt chemical modification is a powdery solid made of natural asphalt.

[0046] The tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.

[0047] The defoamer is polydimethylsiloxane.

[0048] The synergist is Zhuzhijie Z6 type thickener.

[0049] The fluid loss control agent is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl st...

Embodiment 2

[0052] A flow regulator for drilling fluid, comprising natural asphalt chemical modifiers, synergists, defoamers, viscosifiers and fluid loss reducers, each component is weighed according to the following mass percentage composition:

[0053] The addition amount of natural asphalt chemical modification is 0.6%;

[0054] The addition amount of synergist is 0.2%;

[0055] The addition of defoamer is 0.1%;

[0056] The addition of tackifier is 0.2%;

[0057] The addition amount of fluid loss reducer is 0.1%;

[0058] The balance is deionized water.

[0059] The natural asphalt chemical modification is a powdery solid made of natural asphalt.

[0060] The tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.

[0061] The defoamer is polydimethylsiloxane.

[0062] The synergist is Zhuzhijie Z6 type thickener.

[0063] The fluid loss control agent is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl st...

Embodiment 3

[0066] A flow regulator for drilling fluid, comprising natural asphalt chemical modifiers, synergists, defoamers, viscosifiers and fluid loss reducers, each component is weighed according to the following mass percentage composition:

[0067] The addition amount of natural asphalt chemical modification is 0.8%;

[0068] The addition amount of synergist is 0.3%;

[0069] The addition of defoamer is 0.2%;

[0070] The addition of tackifier is 0.1%;

[0071] The addition amount of fluid loss reducer is 0.2%;

[0072] The balance is deionized water.

[0073] The natural asphalt chemical modification is a powdery solid made of natural asphalt.

[0074] The tackifier is one or more of alicyclic petroleum resin, rosin, hydrogenated rosin resin or terpene resin.

[0075] The defoamer is polydimethylsiloxane.

[0076] The synergist is Zhuzhijie Z6 type thickener.

[0077] The fluid loss control agent is one or more of lignite resin, sulfomethyl phenolic resin or carboxymethyl st...

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Abstract

The invention discloses a flow pattern regulator for a drilling fluid. The flow pattern regulator comprises the following components in percentage by mass: 0.3-1% of a chemical modifier for natural asphalt, 0.1-0.7% of a synergist, 0.1-0.3% of a defoaming agent,0-0.4% of a tackifier and 0-0.2% of a filtrate reducer, with the balance being deionized water. The flow pattern regulator for the drilling fluid can reduce the percolation quantity 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 being opened, improves the oil wettability of a solid phase, improves demulsification voltage, enhances the performance stability of the oil-based drilling fluid,effectively plugs micron-sized cracks due to its micron-sized particle sizes, and has a good plugging-while-drilling effect.

Description

technical field [0001] The invention relates to the technical field of drilling fluid regulators, in particular to a flow pattern regulator for drilling fluids. Background technique [0002] Oil-based cobalt well fluid has been widely used due to its excellent lubricating performance, strong inhibition, good wellbore stability and good temperature resistance. 01.2 However, with the development of oil exploration and development to deep formations and offshore, the formation conditions encountered become more and more complex, the drilling depth increases, and the difficulties in drilling and completion become greater. The control of denaturation puts forward higher requirements. At present, organic soil is mainly used to control the rheology of oil-based drilling fluid, but the activation of organic soil is slow, which may easily cause problems such as excessive thickening of drilling fluid and poor plugging effect during drilling. Contents of the invention [0003] The ...

Claims

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Application Information

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IPC IPC(8): C09K8/03C09K8/035C09K8/36C09K8/44
CPCC09K8/03C09K8/035C09K8/36C09K8/426C09K8/44
Inventor 朱文超刘继刚
Owner 武汉思越化学技术有限公司
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