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An inclined vertical well drilling rig

A technology for inclined vertical wells and drilling rigs, which is applied in the direction of drill pipes, drill pipes, drilling equipment, etc., to achieve the effects of simplifying the overall structure, reducing strength, and reducing failure rates

Active Publication Date: 2015-10-28
河北华北石油荣盛机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a drilling rig for inclined vertical wells to solve technical problems such as drilling inclined vertical wells and vertical wells, improving the mining level of coalbed methane, simplifying the structure of the drilling rig, increasing the function of downward pressure load, and enhancing the flexibility of transportation.

Method used

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  • An inclined vertical well drilling rig
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  • An inclined vertical well drilling rig

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Taking a deviated vertical well drilling rig as an example, the present invention will be described in further detail.

[0045] see figure 1 , 2 , the inclined vertical well drilling rig includes a base (2), a derrick (4), a lifting device (5), a power head (6), a gripper (9), a centralizer (7), a torque tong (8), and a drilling tool conveying device (13) and other parts. The derrick is respectively connected with the base (2) through the rotating pin shaft, the swing liquid cylinder (1), the upper support (3), the lower support (12), the lifting device (5) is installed on the inside of the derrick (4), and the power head (6 ) is installed on the derrick, and is connected with the hoisting device (5) through reamed hole bolts, the clamper (9) is installed on the lower end of the derrick, the torque clamp (8) is installed on the inner side of the lower part of the derrick, the centralizer (7) and the derrick Bolt connection, the drilling tool delivery de...

Embodiment 2

[0063] Embodiment 2, taking the pre-drilling installation of the inclined vertical well drilling rig, the process of connecting single rods and removing single rods as an example, further introduces in detail, in order to deeply understand the inclined vertical drilling rig.

[0064] Installation before drilling:

[0065] After the drilling rig is in place, install the upper derrick. According to the designed drilling angle, select a suitable position for the pin hole of the support rod, fix the sliding sleeve with the support rod through the pin, and then connect the two upper supports with the derrick. The hydraulic cylinder slowly lifts the derrick to a suitable working position, connects the upper support with the hinge pin of the base, adjusts the adjustment screw of the lower support, and makes contact between the shoe cover and the meniscus support of the base; installs the connecting rod of the drilling tool conveying device, Position and install the drilling tool conv...

Embodiment 3

[0070] Example 3 illustrates the advantages of inclined vertical well drilling rigs in the development of coalbed methane with a specific example of well layout.

[0071] Taking a standard well site of 60 meters by 60 meters as an example, the depth of the coal seam is about 500 meters, the distance between the wellhead of each well is about 15 meters, and the horizontal distance between the bottom of the well is 250-300 meters. The derrick of the drilling rig is inclined at an angle of 33 degrees, and the wells are arranged in a circular form at the edge of the well site, and 8 inclined vertical wells are drilled. The inclination angle of the drilling rig is changed to 11 degrees, and the distance between the wellheads is guaranteed to be 15 meters. Drill 7 more wells in the inner circle of the well site. Such a well pad can accommodate 15 inclined vertical wells.

[0072] For conventional vertical wells, one well is arranged in one well pad, and 15 wells require 15 well pads...

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Abstract

The invention discloses an inclined and vertical well drilling machine which mainly comprises a derrick, a lifting and pushing device, a power head and the like. The derrick can perform well drilling in a state of forming any one of included angles ranging from 0 degree to 90 degrees with the ground. The lifting device is an inverted hydraulic cylinder, a lifting and pushing function is realized through combination of a pulley block and a steel wire rope, stroke is multiplied. The power head assembly is directly driven by a hollow motor. The inclined and vertical well drilling machine has the advantages that a conventional winch system, a head sheave, a traveling block and a hook are omitted, and accordingly the structure is simplified; a reduction gearbox is omitted from the power head assembly, so that fault rate is lowered; by drilling inclined and vertical wells with the inclined and vertical well drilling machine for development of coal bed gas, well fields and well field space area are decreased; exhausting and milling devices are concentrated, so that management cost is lowered.

Description

technical field [0001] The invention relates to the field of coalbed methane and shallow oil drilling rig equipment, and is a comprehensive drilling rig capable of drilling vertical wells and deviated vertical wells. Background technique [0002] With the continuous increase of human demand for energy, the exploration and development of oil, natural gas and coalbed methane are moving towards areas with poor road conditions and limited well sites such as Gobi beaches, muddy grasslands, river beaches, and mountain hills. develop. [0003] The development of coalbed methane is developing vigorously, and the existing coalbed methane development in Shanxi is mainly based on the development of vertical wells. The drilling area of ​​vertical wells in coal seams is small, and the output of single wells is relatively low; there are many wells, covering a large area, and the cost of land acquisition is high; the cost of road construction in hilly well sites in mountainous areas is la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04E21B15/04E21B19/00
Inventor 李慎奎刘士岩王建伟王坤青王薇
Owner 河北华北石油荣盛机械制造有限公司