A kind of cementing and plugging fluid and preparation method thereof

A technology for plugging fluid and cementing, which is applied in the field of cementing and plugging fluid, can solve the problems of low shear force, reduced use effect, cement precipitation and aggregation, etc. blocking effect

Active Publication Date: 2022-07-05
青州市春晖科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing tamponade fluids have better flushing performance, but the maximum use temperature of this type of tamponade fluid is 80°C to 120°C, and its shear force is very low at high temperatures, which leads to the precipitation and aggregation of cement under flushing , resulting in the last tens of meters of the sound amplitude not being able to be lowered to the bottom smoothly, thereby reducing the use effect

Method used

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  • A kind of cementing and plugging fluid and preparation method thereof
  • A kind of cementing and plugging fluid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: A cementing and plugging fluid, including the following raw materials: clear water; KCM004; KCM026A; KCM003.

[0025] The raw materials of the plugging liquid are proportioned by weight: clear water: 100 parts; KCM004: 1.5 parts; KCM026A: 1 part; KCM003: 0.2 parts.

[0026] In this embodiment, KCM004 is a cement suspending agent for oil wells; KCM026A is a cement retarder for oil wells; KCM003 is a cement defoamer for oil wells.

[0027] In this embodiment, KCM004, KCM026A and KCM003 are all products that are normally sold in the market and can be directly purchased in the market.

[0028] The invention also discloses a preparation method of the cementing and plugging fluid, and the preparation method comprises the following steps:

[0029] X1. Pump in clean water on the cement truck: 100 parts, turn on the mixer and keep its speed at 40 rpm for mixing.

[0030] X2. Weigh KCM004: 1.5 parts, and add it to the clear water, and then continue to stir for 10 ...

Embodiment 2

[0034] Example 2: A cementing and plugging fluid, the proportions by weight include the following raw materials: clear water: 110 parts; KCM004: 2 parts; KCM026A: 1.5 parts; KCM003: 0.3 parts.

[0035] A preparation method of cementing and plugging fluid, the preparation method comprises the following steps:

[0036] X1. Pump in clean water on the cement truck: 110 parts, turn on the mixer to keep its speed at 60 rpm;

[0037] X2. Weigh KCM004: 2 parts, add it to the clear water, and then continue to stir for 15 minutes;

[0038] X3. Weigh KCM026A: 1.5 part; KCM003: 0.3 part in turn and add them to the cement truck, and continue to stir for 15 minutes. After the stirring is completed, the cementing and plugging fluid is prepared.

[0039] The viscosity and shear force of the cementing and plugging fluid prepared in the above Example 2 were tested. After testing, the cementing and plugging fluid in Example 2 had the following indicators: plastic viscosity PV: 10 mPa·s; dynamic...

Embodiment 3

[0041] Embodiment 3: A cementing and plugging fluid, which includes the following raw materials in proportion by weight: clear water: 120 parts; KCM004: 3 parts; KCM026A: 2 parts; KCM003: 0.5 parts.

[0042] A preparation method of cementing and plugging fluid, the preparation method comprises the following steps:

[0043] X1. Pump 120 parts of clean water on the cement truck, turn on the mixer and keep its speed at 80 rpm;

[0044] X2. Weigh KCM004: 3 parts, and add it to the clear water, and then continue to stir for 20 minutes;

[0045] X3. Weigh KCM026A: 2 parts; KCM003: 0.5 parts in turn and add them to the cement truck, and continue to stir for 20 minutes. After the stirring is completed, the cementing and plugging fluid is prepared.

[0046] The viscosity and shear force of the cementing and plugging fluid prepared in the above Example 3 were tested. After testing, the cementing and plugging fluid in Example 3 had the following indicators: plastic viscosity PV: 16 mPa·...

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Abstract

The invention belongs to the technical field of cementing and plugging fluids, and discloses a well cementing and plugging fluid and a preparation method thereof. The cementing and plugging fluid includes the following raw materials in parts by weight: clear water: 100-120 parts; KCM004: 1.5-3 parts; KCM026A: 1-2 parts; KCM003: 0.2-0.5 parts; the present invention adopts the above technical scheme, and the raw materials have good compatibility, strong anti-cement pollution ability, and no high temperature viscosity reduction or Thickening to make it meet the requirements of cementing construction and effectively solve the problem of resistance of electrical measuring instruments.

Description

technical field [0001] The invention belongs to the technical field of cementing and plugging fluids, and in particular relates to a well cementing and plugging fluid and a preparation method thereof. Background technique [0002] In recent years, with the continuous increase of the depth of oil exploration, the drilling depth and difficulty also continue to increase; when the electric measuring instrument is blocked after cementing, the resistance of the electric measuring instrument has always been a difficult problem in cementing; In normal production, it is generally required to leave an artificial pocket of at least 15m from the oil layer casing to the bottom of the oil and gas layer. If the electric measuring instrument fails to meet this condition, the sound amplitude is blocked; generally, a small drilling tool is used to pass Well, remove the sediment in the casing until the rubber plug is pressed, which will not only increase the rent of the drilling tool and the c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/467
CPCC09K8/467Y02W30/91
Inventor 赵波李文明王海斌张晓晖李学聪宋彦波丁海峰王彬张宗耀张大力韩喜正于姗盖涛杜旭李风叶赵鲁鲁
Owner 青州市春晖科技发展有限公司
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