Slim hole large-grain mechanical type side-wall coring device

A mechanical, large particle technology, applied in the direction of wellbore/well components, earthwork drilling and production, etc., can solve the problems of incomplete core, large porosity, unfavorable identification and analysis, etc. The effect of angle and force

Inactive Publication Date: 2017-01-04
BEIJING JIEWEISITE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another: The coring instruments currently on the market encounter soft geological formations with high porosity during the coring process, and the cores taken are incomplete or even broken into several pieces, which is not conducive to later identification and analysis

Method used

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  • Slim hole large-grain mechanical type side-wall coring device
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  • Slim hole large-grain mechanical type side-wall coring device

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Embodiment Construction

[0019] Small hole large particle mechanical sidewall coring device (MSC-127) is mainly composed of ground control system, π mechanical sidewall coring software (software copyright registration number: 2015SR265183), communication short section 200, power supply section 300, electronic section 400, hydraulic section 500, and mechanical section 600. The ground control system and the downhole instrument are connected through the seven-core logging cable and the bridle 105. The communication sub-section 200 and the power section 300, the power section 300 and the electronic section 400, the electronic section 400 and the hydraulic section 500 respectively adopt electronic pressure-bearing joints and threaded joints. The hydraulic joint 500 and the mechanical joint 600 are connected by electronic pressure-bearing joints, hydraulic quick joints and threaded rings.

[0020] The ground control system is composed of industrial computer 101, formation test power supply and acquisition p...

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Abstract

The invention relates to a slim hole large-grain mechanical type side-wall coring device and a method for acquiring a cylinder rock core sample with the diameter of 1.5 inches (38.1mm) and length of 2.5 inches (63.5mm) from an oil well by adopting a mechanical type side-wall coring device (MSC-127) with an outer diameter of 5 inches. The device mainly comprises a ground control system, phi mechanical type side-wall coring software (software copyright register number: 2015SR265183), a communication nipple, a power supply section, an electronic section, a hydraulic section and a mechanical section. The device is used for drilling to sample the rock core sample from the side wall (30 / 60 grains) and safely bringing the sample to the ground. The device has the main functions of: 1) drilling the rock core at a preset depth and displaying the specific orientation; 2) collecting the arrayed rock cores according to the drilling sequence and separating the adjacent rock cores by a spacer; 3) safely and completely bringing the rock cores to the ground.

Description

technical field [0001] The invention relates to a method for obtaining a cylindrical rock core sample with a diameter of 1.5 inches (38.1 mm) and a length of 2.5 inches (63.5 mm) by using a mechanical borehole wall coring instrument with an outer diameter of 5 inches, which is suitable for open hole wells in oil and gas exploration. When the instrument is coring, the logging winch cable is lowered to locate the target layer, and the well wall is drilled through the ground control to obtain the formation core. Background technique [0002] Slim borehole large particle mechanical sidewall corer (MSC-127) belongs to electromechanical integration equipment, which is connected by bridle, electronic joint, mechanical joint and so on from top to bottom. [0003] Compared with drilling and coring, sidewall coring has the advantages of high technical level, low cost, and time-saving; but at the same time, the sample volume obtained is small, which increases the difficulty for later e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/10
CPCE21B49/10
Inventor 刘志刚
Owner BEIJING JIEWEISITE TECH CO LTD
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