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Multi-temperature-section MTC (mud to cement) well cementing liquid and preparation method thereof

A multi-temperature, cementing fluid technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of narrow temperature range applicable to specific surface area, limit the popularization and application of MTC cementing technology, and achieve hydration Good stability, improved long-term sealing performance, good effect

Active Publication Date: 2012-09-12
新疆贝肯化学有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a multi-temperature section MTC cementing fluid and its preparation method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the special requirements for the specific surface area of ​​slag in the prior art of MTC and the narrow applicable temperature range. , which limits the popularization and application of MTC cementing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1, the multi-temperature section MTC cementing fluid: contains 100 parts by weight of slag powder; 50 parts of drilling fluid; 1 to 12 parts of activator; 0.5 to 7 parts of activating auxiliary agent; 0.5 parts; 75 to 85 parts of water.

[0018] Multi-temperature section MTC cementing fluid is prepared according to the method of Example 1: follow the steps below: Step 1: Add 75 to 85 parts of water to 50 parts of drilling fluid and stir for 5 to 10 minutes, then add 1 to 12 1 part of activator and 0.5 to 7 parts of activating adjuvant, stir while adding, stir for 10 to 15 minutes after the addition, then add 0.05 to 0.5 part of dispersant, fully stir for 20 to 30 minutes after the addition, and then at 11500r / min to 12500r / min under high-speed stirring, add 100 parts of slag powder to obtain multi-temperature section MTC cementing fluid.

[0019] Table 1 shows the performance parameters of the multi-temperature stage MTC cementing fluid prepared according to E...

Embodiment 2

[0023] Example 2, the multi-temperature section MTC cementing fluid: contains 100 parts by weight of slag powder; 50 parts of drilling fluid; 6.5 parts of activator; 3.75 parts of activating auxiliary agent; 0.275 parts of dispersant; 80 parts of water.

[0024] Multi-temperature section MTC cementing fluid is prepared according to the method of Example 2: follow the steps below: Step 1: Add 80 parts of water to 50 parts of drilling fluid and stir for 5 to 10 minutes, then add 6.5 parts of activator and 3.75 parts of Activate the adjuvant, stir while adding, stir for 10 to 15 minutes after adding, then add 0.275 parts of dispersant, fully stir for 20 to 30 minutes after adding, then add 100 parts of slag powder was used to obtain multi-temperature section MTC cementing fluid.

[0025] The performance parameters of the multi-temperature stage MTC cementing fluid prepared according to Example 2 at a temperature of 45°C are shown in Table 2.

[0026] Table 2

[0027] t...

Embodiment 3

[0028] Example 3, the multi-temperature section MTC cementing fluid: contains 100 parts by weight of slag powder; 50 parts of drilling fluid; 12 parts of activator; 7 parts of activating auxiliary agent; 0.05 part of dispersant; 75 parts of water.

[0029] Multi-temperature section MTC cementing fluid is prepared according to the method of Example 3: follow the steps below: Step 1: Add 75 parts of water to 50 parts of drilling fluid and stir for 5 to 10 minutes, then add 12 parts of activator and 7 parts of Activate the adjuvant, stir while adding, stir for 10 to 15 minutes after adding, then add 0.05 parts of dispersant, fully stir for 20 to 30 minutes after adding, then add 100 parts of slag powder was used to obtain multi-temperature section MTC cementing fluid.

[0030] The performance parameters of the multi-temperature section MTC cementing fluid prepared according to Example 3 at a temperature of 5°C are shown in Table 3.

[0031] table 3

[0032] temperature...

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Abstract

The invention relates to the technical field of a well cementing liquid for an oil gas well, and relates to a multi-temperature-section MTC (mud to cement) well cementing liquid and a preparation method thereof. The multi-temperature-section MTC (mud to cement) well cementing liquid is prepared from the following raw materials in parts by weight: 100 parts of mineral waste residue powder, 50 parts of well drilling liquid, 1-12 parts of activating agent, 0.5-7 parts of activating auxiliary agent, 0.05-0.5 part of dispersion agent and 75-85 parts of water. According to the invention, through the dual functions of the activating agent and the activating auxiliary agent, the mineral waste residue powder can be fully and completely hydrated in a short time, thus special requirements to mineral waste residue powder are prevented, the preparation technology is simplified, the multi-temperature-section MTC well cementing liquid has the characteristics of good hydration stability, high intensity and resistance to invasion of corrosive ground layer fluids, the capability of ground layer water corrosion resistance of a solidified body is improved, the long-term seal property in the rear stage of production process is improved, and the multi-temperature-section MTC well cementing liquid is suitable for well completion construction operation within the middle and low temperature ranges, and has better effects in well completion construction operation with high possibility of well leakage and gas channeling in a low-temperature shallow layer.

Description

technical field [0001] The invention relates to the technical field of cementing fluid for oil and gas wells, and relates to a multi-temperature section MTC cementing fluid and a preparation method thereof. Background technique [0002] The so-called MTC technology, also known as mud-to-cement slurry technology, is to add curable gel material to the processed drilling fluid, so that the uncurable drilling fluid can be converted into a curable one that can be used for oil and gas well cementing. Cement-like slurry” technology. The "cement-like slurry" obtained by treating drilling fluid with this technology is MTC cementing fluid. The technology of cementing with MTC cementing fluid is mud conversion cement slurry cementing technology. [0003] Compared with conventional oil well cement slurry, MTC can use the water loss reducing material in the drilling fluid to control the stability of the system and reduce the cost of the system; compared with conventional oil well cemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/467
Inventor 段志明马智贺为利吴云义李青山
Owner 新疆贝肯化学有限公司
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