Novel composite lightweight-material low-density cement slurry system and preparation method thereof

A low-density, cement slurry technology, applied in the field of petroleum cementing, can solve problems such as lost circulation, the implementation of production stimulation operations affecting the cementing quality, etc., and achieve the effect of wide production area, good ability to control water loss, and early strength improvement.

Active Publication Date: 2019-06-18
卫辉市化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 s

Method used

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  • Novel composite lightweight-material low-density cement slurry system and preparation method thereof
  • Novel composite lightweight-material low-density cement slurry system and preparation method thereof
  • Novel composite lightweight-material low-density cement slurry system and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0021] Example 1

[0022] The low-density cement slurry system of the new composite lightening material of this embodiment 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 reducing agent 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 of ultrafine slag, 20kg of ultrafine cement, 38kg of active microsilica fume, 4kg of G203A oil well cement early strength agent, G204 oil well cement early strength agent 4kg and G208 oil well cement early strength Strong agent 3kg. The ultrafine slag is S95 granulated blast furnace slag powder; the particle size of the ultrafine cement is 8±1 microns; the particle size of the active microsilica powder is 160-300 mesh. The active micr...

Example Embodiment

[0032] Example 2

[0033] The low-density cement slurry system of a new composite lightening material of 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 reducing agent 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 of ultrafine slag, 20kg of ultrafine cement, 38kg of active microsilica fume, 4kg of G203A oil well cement early strength agent, G204 oil well cement early strength agent 4kg and G208 oil well cement early strength Strong agent 3kg. The ultrafine slag is S95 granulated blast furnace slag powder; the particle size of the ultrafine cement is 8±1 microns; the particle size of the active microsilica powder is 160-300 mesh. The active micro-...

Example Embodiment

[0040] Example 3

[0041] The low-density cement slurry system of a new composite lightening material 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 reducing agent 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 of ultrafine slag, 20kg of ultrafine cement, 38kg of active microsilica fume, 4kg of G203A oil well cement early strength agent, G204 oil well cement early strength agent 4kg and G208 oil well cement early strength Strong agent 3kg. The ultrafine slag is S95 granulated blast furnace slag powder; the particle size of the ultrafine cement is 8±1 microns; the particle size of the active microsilica powder is 160-300 mesh. The active micro-...

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Abstract

The invention discloses a novel composite lightweight-material low-density cement slurry system and a preparation method thereof. The novel composite lightweight-material low-density cement slurry system comprises G-level oil well cement, fresh water, a CP-56 novel composite lightweight material, a G33S oil well cement fluid loss agent, a GH-9 oil well cement retarder, a G401 oil well cement expansion agent, a USZ oil well cement drag reducer and an XP-1 defoaming agent. The novel composite lightweight-material low-density cement slurry system has the advantages that the CP-56 novel compositelightweight material, the G-level oil well cement, the fluid loss agent, the retarder, the expansion agent, the drag reducer and the defoaming agent are used to prepare the low-cost, high-strength andlow-density cement slurry systems of different specific gravity (the density of the system is 1.45-1.75g/cm<3>), the cementing requirements of low-pressure and easy-to-leak stratums of different areas can be satisfied, the hydrocarbon reservoir can be well sealed, quite low cost is achieved, and the system conforms to the purpose of energy conservation and consumption reduction of oilfield 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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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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