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High temperature plugging gel performance tester

A tester and gel technology, applied in the field of high-temperature plugging gel performance tester, can solve problems such as accurate evaluation of plugging gel

Inactive Publication Date: 2016-01-20
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant instrument that can accurately evaluate all the above-mentioned core properties required for plugging gel

Method used

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  • High temperature plugging gel performance tester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This example evaluates the ability of the gel to withstand pressure at 140°C.

[0019] ① Turn on the device start button, open the caliper flange 9, and inject the prepared gel solution into the gel container 2. Seal the caliper flange 9 and close the air release valve. The heating temperature of the heating layer of the colloid container 2 is set to 140° C. by the control system;

[0020] ② Monitor the temperature of the colloid in the colloid container 2 through the first temperature sensor 3 and the second temperature sensor 6, and observe the heating time and the actual heating temperature through the control system;

[0021] ③ After the heating time is reached, open the vent valve to release the gas to prevent the internal gas back pressure from affecting the experimental results and prevent the experimenters from being burned by the high-temperature gas;

[0022] ④ Open the lifting mechanism 7 through the control system, the screw rod connected with the lifting ...

Embodiment 2

[0025] In this example, the length of the tongue sticking out of the gel is analyzed at 150°C, and its adhesion to the wall is tested.

[0026] ① Turn on the device start button, open the caliper flange 9, and inject the prepared gel solution into the gel container 2. Seal the caliper flange 9 and close the air release valve. Set the heating temperature of the gel to 150°C through the control system;

[0027] ② Monitor the temperature of the colloid in the cavity of the colloid container 2 through the first temperature sensor 3 and the second temperature sensor 6 . Observe the heating time and actual heating temperature through the control system;

[0028] ③ After the heating time is reached, open the vent valve to release the gas to prevent the internal gas back pressure from affecting the experimental results and prevent the experimenters from being burned by the high-temperature gas;

[0029] ④Click the device off button to turn off the device. After cooling, control th...

example 3

[0032] This example evaluates the change of the compressive strength of the gel during heating at 150°C for 10 hours (the change of the compressive strength of the gel with time is measured, which characterizes the change of the compressive strength with time).

[0033] ① Turn on the device start button, open the caliper flange 9, and inject the prepared gel solution into the gel container 2. Seal the caliper flange 9 and close the air release valve. Set the heating temperature of the gel to 150°C through the control system;

[0034] ② Monitor the temperature of the colloid in the cavity of the colloid container 2 through the first temperature sensor 3 and the second temperature sensor 6 . Observe the heating time and actual heating temperature through the control system;

[0035] ③ After the heating time is reached, open the vent valve to release the gas to prevent the internal gas back pressure from affecting the experimental results and prevent the experimenters from bein...

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Abstract

The invention provides a high-temperature leak stopping gel performance tester which comprises a colloid container for storing colloid, wherein a calipers flange is arranged at the top of the colloid container, and a high temperature resistant fluororubber sealing plug in tight contact with the inner wall of the colloid container is arranged at the bottom of the colloid container; the colloid is sealed in the colloid container by the calipers flange and the high temperature resistant fluororubber sealing plug; the bottom of the high temperature resistant fluororubber sealing plug is vertically connected with a screw rod; the screw rod is connected with a lifting mechanism for driving the high temperature resistant fluororubber sealing plug to move up or down; a gravity sensor is arranged between the top of the screw rod and the fluororubber sealing plug; a first temperature sensor and a second temperature sensor are arranged on the side wall of the colloid container respectively; the gravity sensor, the first temperature sensor, the second temperature sensor and the lifting mechanism are all connected with a control system; a vent valve, a heating layer and a thermal preservation device are arranged on the side wall of the colloid container. The tester provided by the invention can accurately evaluate the temperature resistance, colloid formability, wall viscosity, expansibility and pressure bearing property of the leak stopping gel.

Description

technical field [0001] The invention relates to the field of oil and gas field drilling fluid plugging formation leakage in the process of petroleum exploration and development, in particular to an instrument capable of simulating the gel state at the formation temperature, which is used to test the gelation and wall adhesion of the gel at the formation temperature , Expansibility, and pressure-bearing high-temperature plugging gel performance tester. Background technique [0002] Since the birth of the modern petroleum industry, lost circulation (problem) has always been accompanied by the exploration and development of oil and gas, and has had a serious impact on the development of the petroleum industry. Oil workers have been plagued by problems such as increased drilling costs, prolonged construction periods, and increased reservoir pollution caused by lost circulation. [0003] According to foreign statistics, among the losses caused by complex situations in the curren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
Inventor 李志勇杨超马攀陈帅李鸿飞韦火云张晋文李洋
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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