Supercritical CO2 continuous drilling fluid simulated circulation test device

A technology for simulating circulation and test equipment, applied in the direction of material inspection products, etc., can solve the problems of increasing oil and gas flow resistance, polluting oil layers, blocking oil and gas channels, etc., achieve good wear resistance and meet the effect of online monitoring

Inactive Publication Date: 2009-11-18
HAIAN GASOLINEEUM SCI RES INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current drilling fluid still has the following disadvantages: solid particles and mud cake block the oil and gas channels; filtrate fluid expands the clay in the formation and blocks the formation pores; Lock-in effect, increasing oil and gas flow resistance; contaminating oil reservoirs

Method used

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Examples

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Embodiment Construction

[0007] This specific embodiment adopts the following technical scheme: it includes the structure of a traditional drilling fluid simulation circulation test device, and its drilling fluid uses supercritical CO2 as the oilfield drilling fluid.

[0008] The use of CO2 as oilfield drilling fluid is an advanced technology to solve the pollution of oil reservoirs by traditional mud drilling fluid.

[0009] This specific embodiment designs the drilling shaft according to the similar theory, can be applied to vertical wells and horizontal wells, it does not pollute the oil layer, especially the nozzle installed at the lower port of the coiled tubing has good wear resistance, and can meet the online monitoring of nozzle pressure and temperature.

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Abstract

The invention relates to a supercritical CO2 continuous drilling fluid simulated circulation test device. The test device comprises the structure of the conventional drilling fluid simulated circulation test device, and uses supercritical CO2 as oilfield drilling fluid. A drilling shaft designed according to the similarity theory is applicable to a vertical shaft and a horizontal well and does not pollute an oil layer, particularly a nozzle arranged at the lower port of a continuous pipe has good abrasion resistance, and the test device can meet on-line monitoring of pressure and temperature of the nozzle.

Description

Technical field: [0001] The invention relates to a supercritical CO2 continuous drilling fluid simulated circulation test device. Background technique: [0002] The role of drilling fluid in drilling operations and protection of oil and gas layers and the strict requirements on drilling fluid in various aspects have prompted the rapid development of drilling fluid technology. After years of scientific research and development and production practice, the drilling fluid has developed from a drilling fluid system that only meets the requirements of the drill bit to a drilling fluid system that meets the needs of all aspects. For example, low-viscosity, low-friction, low-solid polymer drilling fluids for fast drilling, anti-sticking drilling fluids, anti-collapse drilling fluids for rock characteristics, saturated brine drilling fluids for drilling salt rock formations, and low-density oil and gas layer protection Oil-in-water drilling fluid, oil-based drilling fluid to preven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/26
Inventor 金雪松金玉松王永明
Owner HAIAN GASOLINEEUM SCI RES INSTR
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