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A new type of composite lightening material low-density cement slurry system and its preparation method

A cement slurry and low-density technology, applied in the field of petroleum cementing, can solve problems such as the implementation of production enhancement operations that affect the quality of cementing, well lost circulation, etc., and achieve the effects of good linearity of thickening time, wide production area, and zero free water

Active Publication Date: 2021-07-20
卫辉市化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the process of petroleum exploration and development, more and more formations prone to leakage such as low-pressure formations and weak formations are encountered, and the low-density cement slurry system is gradually developed and perfected along with the treatment of these complicated situations. With the continuous development and promotion of deep well and ultra-deep well technology, leakage-prone formations in deep and ultra-deep wells often cause serious lost circulation, which seriously affects the quality of cementing and the implementation of subsequent stimulation operations

Method used

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  • A new type of composite lightening material low-density cement slurry system and its preparation method
  • A new type of composite lightening material low-density cement slurry system and its preparation method
  • A new type of composite lightening material low-density cement slurry system and its preparation method

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Effect test

Embodiment 1

[0022] The low-density cement slurry system of the new composite lightening material in this example is composed of the following materials: G grade oil well cement 100kg, fresh water 100kg, CP-56 new composite lightening material 50kg, G33S oil well cement fluid loss reducer 1.5kg, GH-9 oil well Cement retarder 0.3kg, G401 oil well cement expansion agent 1.5kg, USZ oil well cement drag reducer 0.3kg and XP-1 defoamer 0.2kg.

[0023] The CP-56 new composite lightening material is composed of the following materials: 12kg ultrafine slag, 20kg ultrafine cement, 38kg active microsilica, 4kg G203A oil well cement early strength agent, G204 oil well cement early strength agent 4kg and G208 oil well cement early strength agent Strong agent 3kg. The ultra-fine slag is S95 grade granulated blast furnace slag powder; the particle size of the ultra-fine cement is 8±1 micron; the particle size of the active micro-silicon powder is 160-300 mesh. The manufacturer of the active micro-silic...

Embodiment 2

[0033] A new composite lightening material low-density cement slurry system in this embodiment is composed of the following materials: G grade oil well cement 100kg, fresh water 90kg, CP-56 new composite lightening material 40kg, G33S oil well cement fluid loss reducer 1.2kg, GH -9 oil well cement retarder 0.2kg, G401 oil well cement expansion agent 1.2kg, USZ oil well cement drag reducer 0.3kg and XP-1 defoamer 0.2kg.

[0034]The CP-56 new composite lightening material is composed of the following materials: 12kg ultrafine slag, 20kg ultrafine cement, 38kg active microsilica, 4kg G203A oil well cement early strength agent, G204 oil well cement early strength agent 4kg and G208 oil well cement early strength agent Strong agent 3kg. The ultra-fine slag is S95 grade granulated blast furnace slag powder; the particle size of the ultra-fine cement is 8±1 micron; the particle size of the active micro-silicon powder is 160-300 mesh. The manufacturer of the active micro-silica fume ...

Embodiment 3

[0041] A new composite lightening material low-density cement slurry system in this embodiment is composed of the following materials: G grade oil well cement 100kg, fresh water 78kg, CP-56 new composite lightening material 30kg, G33S oil well cement fluid loss reducer 1.6kg, GH -9 oil well cement retarder 0.3kg, G401 oil well cement expansion agent 1.3kg, USZ oil well cement drag reducer 0.3kg and XP-1 defoamer 0.2kg.

[0042] The CP-56 new composite lightening material is composed of the following materials: 12kg ultrafine slag, 20kg ultrafine cement, 38kg active microsilica, 4kg G203A oil well cement early strength agent, G204 oil well cement early strength agent 4kg and G208 oil well cement early strength agent Strong agent 3kg. The ultra-fine slag is S95 grade granulated blast furnace slag powder; the particle size of the ultra-fine cement is 8±1 micron; the particle size of the active micro-silicon powder is 160-300 mesh. The manufacturer of the active micro-silica fume...

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Abstract

The invention discloses a low-density cement slurry system of a new composite lightening material and a preparation method thereof, which is composed of the following materials: G grade oil well cement, fresh water, CP‑56 new composite lightening material, G33S oil well cement fluid loss reducer, GH‑9 Oil well cement retarder, G401 oil well cement expansion agent, USZ oil well cement drag reducer and XP‑1 defoamer. The present invention prepares low-cost, high-strength, low-density cement slurry systems with different specific gravity by selecting CP-56 new composite lightening material and G grade oil well cement, fluid loss reducer, retarder, expansion agent, drag reducer and defoamer ( Density 1.45g / cm 3 ~1.75g / cm 3 ), which can meet the cementing requirements of low-pressure and easy-to-leakage formations in different blocks, seal oil and gas layers very well, and control the cost very low, which is in line with the purpose of energy saving and consumption reduction of oil field production units.

Description

technical field [0001] The invention relates to the technical field of petroleum cementing. Specifically, the invention relates to a low-density cement slurry system of a new composite lightening material and a preparation method thereof. Background technique [0002] With the process of petroleum exploration and development, more and more formations prone to leakage, such as low-pressure formations and weak formations, are encountered, and the low-density cement slurry system is gradually developed and perfected along with the treatment of these complicated situations. With the continuous development and promotion of deep well and ultra-deep well technology, leakage-prone formations in deep and ultra-deep wells often cause serious lost circulation, which seriously affects the quality of cementing and the implementation of subsequent stimulation operations. To improve the cementing quality of such complex well conditions, it is necessary to improve the low-density cement sl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
Inventor 赵元伟赵俊涛尹金彬吉万山张志华黄竟飞常少赟张峰张艺榉赵上云
Owner 卫辉市化工有限公司
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