Horizontal directional drilling construction method and pipeline back-dragging process
A technology of horizontal directional drilling and pipe back towing, applied in the direction of pipeline laying and maintenance, pipes/pipe joints/fittings, mechanical equipment, etc. The effect of reducing the total force
Pending Publication Date: 2022-03-01
SICHUAN GASOLINEEUM CONSTR ENG
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
For example, one of the purposes of the present invention is to provide a horizontal directional drilling pipeline pulling back process to solve the reel effect caused by the interaction between the rigidity of the pipeline and the inclination angle of the hole when the horizontal directional drilling is dragging the pipeline back into the hole, thereby Effectively reduce the pullback load and ensure the safety of pipeline stress
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
example 1
[0059] A horizontal directional drilling pipeline has an outer diameter of 1016mm and a length of 1000m. The geological conditions are rocks, the excavation angle (pipeline entry) is 10 degrees, and the bending stress of the pipeline is less than 360Mpa.
[0060] figure 1 Schematic diagram of dragging back the horizontal directional drilling pipeline, such as figure 1 As shown, the directional drilling machine 1 is set at the entry point, and is connected to the front end of the drill pipe 2 by using a wired or wireless steering device. The pipeline 6 is placed at the excavation point, and the support wheel 7 is arranged on the cat's back curve. After the reaming is completed, the directional drilling machine 1 at the entry point drags the prefabricated pipeline 6 into the directional drilling hole 3, and the drill pipe 2 passing through the entry point is continuously recovered, thereby completing the pipeline dragging process and realizing the laying of the pipeline undergr...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a horizontal directional drilling construction method and a pipeline back-dragging process. The pipeline back-dragging process comprises the following steps: establishing a pipeline back-dragging three-dimensional simulation model; a pipeline self-weight load and a pipeline hole entering point inclination angle are set, and the pipeline displacement condition under the pipeline self-weight state is analyzed to obtain a pipeline hole entering deflection curve; establishing pipeline supporting points on the basis of the pipeline in-hole deflection curve, and carrying out analogue simulation calculation in a pipeline pull-back stage to obtain a pipeline nonlinear state, displacement of each supporting point and a load state under the condition of setting different supporting points; analyzing simulation results under different support conditions, screening to obtain a support point setting condition and a catwalk back curve which meet a pull-back condition, and generating a catwalk setting scheme; and on the basis of the catwalk setting scheme, catwalk setting is completed, and pipeline back dragging is implemented. The construction method comprises the pipeline back-dragging process. The device can effectively reduce the reel effect when the pipeline enters a hole, and improves the success probability of pipeline back dragging.
Description
technical field [0001] The invention relates to the technical field of directional drilling crossing of oil and gas pipelines, in particular to a horizontal directional drilling pipeline pull-back process and a horizontal directional drilling construction method. Background technique [0002] Horizontal directional drilling of oil and gas pipelines is a construction method that uses typical techniques such as steering, reaming, and back dragging to drag the pipeline from the ground into the ground through the drilling rig. [0003] Usually, the horizontal directional drilling process needs to set up three areas: the entry point, the exit point (that is, the entry point of the pipeline), and the back towing, and the pipeline is prefabricated on the back towing on the ground. The drilling rig is placed at the entry point and connected to the front end of the drill pipe with a wired or wireless steering device. The drill rotates to transmit torque or the mud motor provides rota...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F16L1/032F16L1/06
CPCF16L1/032F16L1/06
Inventor 张杰徐云川肖国豪
Owner SICHUAN GASOLINEEUM CONSTR ENG