Unlock instant, AI-driven research and patent intelligence for your innovation.

Non-permeable water base sealing fluid and preparation technology thereof

A sealing liquid and non-permeable technology, applied in the direction of drilling compositions, chemical instruments and methods, etc., can solve the problems of high preparation temperature and complicated preparation process, and achieve low cost, simple preparation process, and no pollution in the preparation process Effect

Inactive Publication Date: 2010-06-23
WESTERN DRILLING KELAMAYI DRILLING TECH INST
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing fluid has the advantages of wide source of raw materials, stable performance, environmental friendliness, and strong adsorption capacity to rock cores, etc., but the preparation process is complicated and the preparation temperature is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Non-permeable water base sealing fluid and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Water, ethanol, hydrophobic association polymer, hydroxyethyl cellulose (HEC), blocking agent, emulsifier were weighed respectively according to the mass ratio of 100: 5: 1: 0.3: 30: 2, and hydroxyethyl cellulose ( HEC) is uniformly stirred and dissolved in water at room temperature, and the hydrophobic association polymer wetted by ethanol is slowly added. After stirring evenly, a blocking agent and an emulsifier are added in turn to form a stable colloid, that is, a non-permeable water-based Sealing fluid.

Embodiment 2

[0013] Water, ethanol, hydrophobic association polymer, hydroxyethyl cellulose (HEC), blocking agent, emulsifier were weighed respectively according to the mass ratio of 100:5:5:0.8:50:10, and the hydroxyethyl cellulose ( HEC) is uniformly stirred and dissolved in water at room temperature, and the hydrophobic association polymer wetted by ethanol is slowly added. After stirring evenly, a blocking agent and an emulsifier are added in turn to form a stable colloid, that is, a non-permeable water-based Sealing fluid.

Embodiment 3

[0015] Water, ethanol, hydrophobic association polymer, hydroxyethyl cellulose (HEC), blocking agent, emulsifier were weighed respectively according to the mass ratio of 100:5:3:0.5:35:5, and the hydroxyethyl cellulose ( HEC) is uniformly stirred and dissolved in water at room temperature, and the hydrophobic association polymer wetted by ethanol is slowly added. After stirring evenly, a blocking agent and an emulsifier are added in turn to form a stable colloid, that is, a non-permeable water-based Sealing fluid.

[0016] The comparative evaluation of each embodiment performance:

[0017]

[0018] As can be seen from the above table, the products of each embodiment all meet the requirements of SY / T5347-2005 coring sealing fluid, and the effect of embodiment 3 is the best.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a sealing fluid which is used for the drilling sealed coring of the petroleum exploration and development and a preparation technology thereof. The sealing fluid adopts water as a continuous phase and adopts hydrophobic association polymer, hydroxyethyl cellulose, plugging agent and emulsifying agent as main raw materials, and is prepared through the following method: the hydroxyethyl cellulose (HEC) is uniformly mixed under the atmospheric temperature to be dissolved in the water, the hydrophobic association polymer which is moistened by the ethanol is slowly added, and the plugging agent and the emulsifying agent are sequentially added after being uniformly mixed to form a stable colloid. The non-permeable water base sealing fluid is mainly used for the closed coring operation in the well drilling of the petroleum exploration and development.

Description

technical field [0001] The invention relates to a non-permeable water-based sealing fluid and a preparation process thereof, which is mainly used as a sealing fluid for oil exploration and development drilling sealing and coring. Background technique [0002] At present, in petroleum exploration, the mature sealing fluids used in sealing coring for domestic and foreign drilling are divided into three categories: oil-based, water-based and synthetic-based. [0003] Oil-based sealing fluid includes castor oil oil-based sealing fluid and high-efficiency sealing fluid. Castor oil oil-based sealing liquid is mainly made by stirring and refining castor oil, perchlorethylene resin and glyceryl monostearate at a certain temperature; during the preparation process, toxic gases such as chlorine gas and hydrogen chloride are released, polluting the environment and damaging The operators are in good health and the product performance is not stable. The main raw material of high-effici...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/00
Inventor 乔东宇黄治中张兴国王新东杨玉良郑义平
Owner WESTERN DRILLING KELAMAYI DRILLING TECH INST