Sea directional drilling system and jam releasing method
A technology for directional drilling and jamming, which is applied in the field of directional drilling system and jamming in the sea, which can solve the problems of sandy and soil locking of the drill pipe, inability to effectively carry out seabed jamming work, and easy collapse, so as to ensure smooth pullback Effect
Pending Publication Date: 2022-08-05
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] However, in the process of dragging back the submarine pipeline, because the surface of the seabed is mostly sand, it is easy to collapse, so the drilling tools for directional drilling are easily buried by the collapsed sand layer, which in turn causes the drill pipe to be locked by sand, making the Significant increase in torque and pull for drill rigs
In the underwater environment, the conventional mud circulation system cannot effectively carry out the work of unblocking the seabed, which leads to increased engineering risks, and may even cause the failure of the submarine pipeline to pull back
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
Embodiment Construction
[0043] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0044] like figure 1 As shown, the embodiment of the present application provides an offshore directional drilling system, where the offshore directional drilling system includes a drilling rig device 100 and a card releasing device 200 .
[0045] The drilling rig device 100 includes a drilling rig body 110 , a drilling tool assembly 120 and a testing instrument. The drilling rig body 110 is connected to the drilling tool assembly 120 ...
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 discloses a sea directional drilling system and a jam releasing method, and the sea directional drilling system comprises a drilling machine device and a jam releasing device; the drilling machine device comprises a drilling machine body, a drilling tool assembly and a detection instrument, the drilling machine body is connected with the drilling tool assembly, the drilling tool assembly is connected with a target pipeline, and the detection instrument is configured to detect the torque of the drilling machine body; and the jam releasing device is configured to be connected with the drilling machine body when the drilling tool jamming phenomenon occurs and convey a jam releasing medium into the drilling tool assembly so that the pressure in the drilling tool assembly can be larger than the external pressure, and when the drilling tool jamming phenomenon occurs, the torque of the drilling machine body is larger than a set threshold value. The invention discloses a directional drilling system for the sea. Underwater drill jamming can be detected in time, jamming is released in time through a jamming releasing method, and smooth back dragging of the submarine pipeline is guaranteed.
Description
technical field [0001] The present application relates to the technical field of offshore petroleum engineering, and in particular, to a seaward directional drilling system and a method for removing jams. Background technique [0002] Offshore oil and gas are mainly transported through submarine pipelines. The traditional landing method of submarine pipelines is: pre-excavation, dragging and backfilling protection of submarine pipelines in the landing section. However, this will cause great damage to the landform of the coastline where the pipeline landing site is located, and have a great impact on the environment. [0003] The directional drilling crossing technology to the sea is a more economical and reliable subsea pipeline landing construction technology. The subsea pipeline can be drilled from a certain position in the ground under the back drag of the drill pipe, which has the function of protecting the coastline landform. [0004] However, in the process of towing ...
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): E21B7/12E21B7/04E21B31/00
CPCE21B7/12E21B7/043E21B31/00
Inventor 姜华孙碧君荣世伦辛林王成强李俭
Owner BC P INC CHINA NAT PETROLEUM CORP