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A kind of shear lifting agent for solid-free completion fluid workover fluid for oil and gas wells and preparation method thereof

A technology without solid phase and completion fluid, which is applied in the fields of workover fluid additives and oilfield completion fluids, which can solve the problems of poor suspension and sand-carrying of workover fluid, and achieve the effect of preventing sand settling and obstruction accidents

Active Publication Date: 2022-02-01
成都西油华巍科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a shear lifting agent for oil and gas wells without solid phase completion fluid and workover fluid. In addition, the present invention also discloses a preparation method of a shear-lifting agent for a solid-free completion fluid and workover fluid for oil and gas wells

Method used

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  • A kind of shear lifting agent for solid-free completion fluid workover fluid for oil and gas wells and preparation method thereof
  • A kind of shear lifting agent for solid-free completion fluid workover fluid for oil and gas wells and preparation method thereof
  • A kind of shear lifting agent for solid-free completion fluid workover fluid for oil and gas wells and preparation method thereof

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Embodiment 1

[0042] This embodiment discloses a shear lifting agent for solid-free completion fluid and workover fluid for oil and gas wells. The percentage composition is 8-12% of metal salt; 28-32% of alkalinity regulator; 8-12% of flow pattern regulator; and the balance is water.

[0043] To further define, in this embodiment, the raw materials of each component are composed according to the following weight percentages, 10% of metal salt, 30% of alkalinity regulator, 10% of flow pattern regulator, and 50% of water.

[0044] Among them, the metal salt is aluminum chloride, chromium chloride, manganese chloride, manganous chloride, ferrous chloride, cupric chloride, calcium chloride, ferric chloride, magnesium chloride, manganese nitrate, aluminum nitrate, magnesium nitrate salts of any two different metals.

[0045] It should be further explained that, in actual use, the composition ratio of any two different metals in the metal salt is the same as the molecular mass ratio.

[0046] W...

Embodiment 2

[0072] This embodiment is basically similar to Embodiment 1, the difference is that according to the quality and 100% of the raw materials: 50% of water, 10% of metal salt, 30% of alkalinity regulator, 10% of flow regulator; wherein, metal salt It is composed of aluminum chloride and magnesium nitrate at a ratio of 1:1, the alkalinity regulator is sodium hydroxide, and the flow pattern regulator is polymeric alcohol. In the reaction device, add the formulated amount of water first, then add the formulated amount of metal salt, dissolve and mix evenly; slowly add the formulated amount of alkalinity regulator to ensure that the pH value is maintained at 9; after the reaction is completed, add the flow type Regulator, stirred at a constant speed for 3 hours, with a rotating speed of 500r / min; evaporated to dryness, pulverized to obtain powder.

Embodiment 3

[0074] This embodiment is basically similar to Embodiment 1, the difference is that according to the quality and 100% of the raw materials: 50% of water, 10% of metal salt, 30% of alkalinity regulator, 10% of flow regulator; wherein, metal salt It is composed of magnesium chloride and aluminum chloride at a ratio of 1:1, the alkalinity regulator is sodium hydroxide, and the flow pattern regulator is polymeric alcohol. In the reaction device, add the formulated amount of water first, then add the formulated amount of metal salt, dissolve and mix evenly; slowly add the formulated amount of alkalinity regulator to ensure that the pH value is maintained at 9.5; after the reaction is completed, add the flow type Regulator, stirred at a constant speed for 3 hours, with a rotating speed of 500r / min; evaporated to dryness, pulverized to obtain powder.

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Abstract

The invention discloses a shear lifting agent for solid-free completion fluid and workover fluid for oil and gas wells, which includes metal salts, alkalinity regulators, flow pattern regulators and water, wherein the raw materials of each component are in the following weight percentages Composition, 8-12% of metal salt; 28-32% of alkalinity regulator; 8-12% of flow pattern regulator; the balance is water; in addition, the invention also discloses a solid-free completion fluid for oil and gas wells. The preparation method of the cutting agent for well fluid comprises the following steps: step 1: add formula amount of water into the reaction device, then add formula amount of metal salt, use stirring device to stir to make it dissolve quickly and mix uniformly; step 2: mix it Slowly add to the alkalinity regulator of formula quantity, and adjust the pH=9-10; Step 3: After the reaction is completed, add the flow regulator and stir; Step 4: Evaporate the solvent and pulverize it to obtain powder. The shear-lifting agent disclosed by the invention can solve the technical problem of poor suspension and sand-carrying of solid-phase composite brine completion fluid and workover fluid.

Description

technical field [0001] The invention relates to the technical field of additives for oil field completion fluids and workover fluids, in particular to a shear-lifting agent for oil and gas wells with solid-free completion fluids and workover fluids; in addition, the invention also relates to an oil and gas well without The invention discloses a preparation method of a shear-lifting agent for a solid-phase well completion fluid and a workover fluid. Background technique [0002] The purpose of oil and gas well completion is to maximize the communication channels between formations, so as to ensure the highest production rate and recovery rate of oil and gas wells. In a broad sense, any liquid used to contact the production layer due to operational needs is called completion fluid. In the specific production process, the foreign liquid used to contact oil and gas layers before oil testing is called completion fluid, such as drilling (oil and gas layer) fluid, perforating flui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/03B01F27/90B01F35/31B01F35/32B01J19/00B01J19/18
CPCC09K8/03B01J19/18B01J19/0066B01F27/2311B01F27/90B01F35/31B01F35/3204
Inventor 宋芳徐兴华肖刚麻洪霞
Owner 成都西油华巍科技有限公司
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