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Organic salt polyamine drilling fluid and preparation method thereof

An organic salt and drilling fluid technology, which is applied in the field of drilling fluid, can solve the problems of poor inhibition and high cost of organic salt polyamine drilling fluid, and achieve the effects of improving recovery rate, reducing production cost, and enhancing inhibition

Inactive Publication Date: 2015-10-07
CNPC XIBU DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an organic salt polyamine drilling fluid and its preparation method, which overcomes the deficiencies in the prior art and can effectively solve the problem of existing organic salt polyamine drilling fluids. High cost and poor inhibition of amine drilling fluids

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, the organic salt polyamine drilling fluid, the raw material contains 100 parts by weight of water, 0.5 to 3 parts of methyl glucoside, 1 to 7 parts of polyamine shale inhibitor, and 0.1 parts of plugging agent to 5 parts, 10 to 50 parts of organic salt, 0.2 to 6 parts of fluid loss control agent, 0.1 to 0.5 parts of coating agent, 0.1 to 1.5 parts of flow regulator, 0.1 to 2 parts of lubricant, 0.5 to 70 parts of weighting agent, 1 to 7 parts of KCL.

Embodiment 2

[0019] Embodiment 2, the organic salt polyamine drilling fluid, the raw material contains 100 parts by weight of water, 0.5 to 3 parts of methyl glucoside, 1 to 7 parts of polyamine shale inhibitors, and 0.1 parts of plugging agent to 5 parts, 10 to 50 parts of organic salt, 0.3 to 4 parts of bentonite, 0.2 to 6 parts of fluid loss control agent, 0.1 to 0.5 parts of coating agent, 0.1 to 1.5 parts of flow regulator, lubrication 0.1 to 2 parts of the agent, 0.5 to 70 parts of the weighting agent, and 1 to 7 parts of KCL.

Embodiment 3

[0020] Example 3, the organic salt polyamine drilling fluid is obtained according to the following preparation method: add the required amount of bentonite to the required amount of water and mix well, let stand for 8 hours to 12 hours, then add the required amount of coated agent, fluid loss reducer, plugging agent, polyamine mud shale inhibitor, flow regulator, organic salt, methyl glucoside, lubricant, weighting agent and KCL and mix uniformly to obtain organic salt polyamine drilling liquid.

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PUM

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Abstract

The invention relates to the technical field of a drilling fluid, in particular to an organic salt polyamine drilling fluid and a preparation method thereof. The organic salt polyamine drilling fluid comprises the following raw materials in parts by weight: water, methyl glucoside, a polyamine mud shale inhibitor, a blocking agent, an organic salt, a filtrate reducer, a capsulating agent, a flow pattern regulator, a lubricant, a weighting agent and KCL (polyamine class mud). Compared with the organic salt polyamine drilling fluid in the prior art, the organic salt polyamine drilling fluid obtained by the preparation method has the advantages that the recovery rate is greatly improved, the inhibitive ability of a drilling liquid system is enhanced, and underground safety is guaranteed; the cost is averagely reduced by 20 to 50 percent, and the production cost is greatly reduced; meanwhile, the preparation of the organic salt polyamine drilling fluid is simple, and the workload is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of drilling fluid, and relates to an organic salt polyamine drilling fluid and a preparation method thereof. Background technique [0002] Drilling fluid is a working fluid that has many functions during drilling, such as carrying and removing cuttings, cooling and lubricating the drill bit, balancing formation pressure, protecting the stability of the wellbore wall and protecting the oil layer from damage. Its performance directly affects drilling efficiency and downhole drilling. Safety and cost control are important components of drilling engineering technology. As the development of oil fields gradually enters the middle and later stages, the difficulty of drilling operations and the cost of oil and gas well development are increasing sharply. There are more and more downhole complex situations encountered in drilling. The problems often encountered include excessive torque, resistance when tripping, pi...

Claims

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Application Information

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IPC IPC(8): C09K8/12C09K8/24
CPCC09K8/12C09K8/24C09K2208/34
Inventor 乔东宇郑义平黄治中李称心张德莲段立波李辉王立东
Owner CNPC XIBU DRILLING ENG
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