CN110005354B - Method for lowering pipes in vertical drilling holes through multiple pipelines - Google Patents

Method for lowering pipes in vertical drilling holes through multiple pipelines Download PDF

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Publication number
CN110005354B
CN110005354B CN201910293155.1A CN201910293155A CN110005354B CN 110005354 B CN110005354 B CN 110005354B CN 201910293155 A CN201910293155 A CN 201910293155A CN 110005354 B CN110005354 B CN 110005354B
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pipeline
hole
pipe
section
lowering
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CN110005354A (en
Inventor
纪进科
孙星
王晓光
张丰泽
苗文学
宋彩红
周波
张红超
王兆博
蒋宗旋
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Xincheng Gold Mining Shandong Gold Mining Co ltd
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Xincheng Gold Mining Shandong Gold Mining Co ltd
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/02Rod or cable suspensions
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/18Connecting or disconnecting drill bit and drilling pipe
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B23/00Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
    • E21B23/01Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for anchoring the tools or the like

Abstract

The invention discloses a method for discharging pipes in multiple pipelines in a vertical drilling hole, which comprises the following steps: (A) constructing a vertical drilling hole at the coordinate position of a pipe orifice of a pipeline to be lowered in the middle section of the upper part of the lowering path, wherein the bottom of the hole is communicated with the horizontal roadway of the next middle section; (B) and sequentially putting all prefabricated pipe sections into the drill hole in a casing welding mode, fixing the pipeline through a support device after putting one pipeline, and butting the bottom of the pipeline (7) with a corresponding horizontal pipeline in a through roadway through an elbow. The method does not need in-hole operation, has small construction amount, short construction period and low cost, ensures the operation safety and has obvious economic benefit.

Description

Method for lowering pipes in vertical drilling holes through multiple pipelines
Technical Field
The invention relates to a method for performing multi-pipeline pipe descending in a vertical drilling hole.
Background
In the process of transforming the underground drainage and sludge discharge system of the Xincheng gold mine, 6 drainage and sludge discharge pipelines need to be communicated between middle sections (vertical depth of 250 meters) of-630 m to-380 m, wherein the middle sections are respectively two phi 377 multiplied by 12mm seamless steel pipes, two phi 245 multiplied by 12mm seamless steel pipes and two phi 108 multiplied by 10mm seamless steel pipes, and the total weight of the pipelines is about 80 tons calculated according to the vertical distance.
And a conventional pipe fixing mode (calculating the form and the distance of the pipeline bracket according to the weight of the pipeline) is adopted, and a feasible path is provided with a measure well between a blind vertical well and a middle section. Through design demonstration, the blind vertical shaft has a small section, the specification of a pipeline beam in the vertical shaft is small, the pipeline installation requirement cannot be met, the measure wells between the middle sections are subjected to closed backfill along with the completion of the extraction, the pipeline installation condition is not met, and the length of the route reaches 6 times of the vertical height and is about 1500 meters. Therefore, if a conventional pipe fixing mode is adopted, another construction path is needed to communicate the middle section from-630 m to-380 m.
In a conventional manner, there are two specific solutions: firstly, a measure vertical shaft with the cross section area of-380 m to-630 m not less than 7.06 square meters is constructed to meet the operation requirement of personnel in the measure vertical shaft, and simultaneously a supporting beam and a bracket are installed in the measure vertical shaft and are installed and laid according to a conventional mode. Secondly, 6 pipeline drill holes are respectively constructed from-380 m to-630 m according to the diameters of pipelines, and the pipelines are installed according to the conventional drilling, pipe discharging and pipe fixing modes, so that the defects that the total vertical height of the drill holes reaches 1500 m, the problems of large construction quantity, long construction period and high cost exist, and the difficulty in placing and fixing longer pipelines in smaller orifices is higher.
Disclosure of Invention
The invention provides a method for lowering pipes of multiple pipelines in a vertical drilling hole, which aims to: the construction engineering quantity of drilling or sinking is reduced, the construction efficiency is improved, the cost is reduced, and the construction difficulty is reduced.
The technical scheme of the invention is as follows:
a method for lowering pipes in a vertical drilled hole through multiple pipelines is characterized by comprising the following steps:
(A) constructing a vertical drilling hole at the coordinate position of the pipe orifice of the upper middle section where the pipeline needs to be put down, wherein the hole bottom is communicated with the horizontal roadway of the next middle section;
(B) and sequentially putting the prefabricated pipe sections into the drill holes in a casing welding mode to form a pipeline, fixing the pipeline through a support device after putting one pipeline, and butting the bottom of the pipeline with a corresponding horizontal pipeline in a through roadway through an elbow.
As a further improvement of the method, the detailed measures of the step (B) are as follows:
(B.1) arranging a derrick and a fixed bearing beam which parallelly crosses over the orifice at the orifice of the upper middle section, and installing a hoisting device on the derrick; sequentially lowering and fixing the pipelines;
(B.2) for the currently lowered pipeline, taking a steel pipe to perform each pipe section, and welding a sleeve at one end of each pipe section;
(B.3) mounting an elevator at one end, close to the casing, of the first pipe section near the orifice, hoisting the first pipe section by using a lifting hook and the elevator of the hoisting device, and then lowering the first pipe section into the drill hole;
(B.4) when the elevator on the current lowering pipe section reaches the position of the bearing beam, using the bearing beam to support the current elevator, then disconnecting the connection between the lifting hook and the elevator, using the lifting hook and another auxiliary elevator to lift the next pipe section, aligning and sleeving the lower end of the next pipe section with the upper end of the previous pipe section, and then welding; continuing to lower the next section of pipe section;
(B.5) repeating the step (B.4) until the upper end of the last section of the pipeline is placed at the position of the bearing beam;
(B.6) using a lifting hook to lift the upper end of the current lowering pipeline, and moving the pipeline to a position close to the hole wall of the drill hole; each pipeline corresponds to a group of support devices respectively, each support device comprises a straight pipe support and an elbow pipe support, the straight pipe support is welded at the upper end of the pipeline, and the elbow pipe support is welded at the lower end of the pipeline;
(B.7) welding the straight pipe support at the upper end with the bearing beam; so far, the lowering and fixing of the current pipeline are completed;
(B.8) repeating steps (B.2) to (B.7) until all the pipe lowering fixing is completed.
As a further improvement of the method, a force measuring device is arranged on the hoisting device and used for detecting the current hoisting weight; in the step (B.7), firstly, lowering the pipeline to enable the bottom of the pipeline to be in contact with the bottom of the drill hole, then gradually lowering the pipeline and observing the force measuring device, stopping lowering when the weight born by the hoisting device is 40-60% of the total weight of the pipeline, and welding the straight pipe support at the upper end with the bearing beam.
As a further improvement of the method, the hoisting device comprises a stable vehicle arranged at the middle section of the upper part, a fixed pulley block arranged at the top of the derrick and a movable pulley block provided with the lifting hook, wherein the movable pulley block is positioned below the fixed pulley block; and a traction rope on the stable vehicle bypasses the fixed pulley block from the top and bypasses the movable pulley block from the bottom, and then the tail end of the traction rope is fixedly connected with the derrick.
As a further improvement of the method, the method also comprises the step (C): after all pipelines are completely lowered, sealing the section between the bottom of the drill hole and the through lane, and conveying concrete to the bottom of the drill hole until the height of the concrete exceeds the section between the hole bottom and the through lane; and after the concrete is cured, pouring fine sand into the hole from the hole opening of the drilling hole to fix the pipe.
Compared with the prior art, the invention has the following positive effects: (1) the method fully combines the advantages of the drilling and pipe fixing and the installation of the lower pipe in the shaft, overcomes the defects of the drilling and pipe fixing and the installation of the lower pipe in the shaft, only needs to construct one drilling hole, has limited drilling hole diameter, does not need to operate in the hole, has small construction amount, short construction period and low cost, and ensures the operation safety; (2) each group of pipelines are sequentially transferred in a segmented sleeving manner, so that the operation is convenient; (3) the hoisting device, the elevator and the bearing beam are mutually matched, when the sleeve is welded, the bearing beam is used for temporarily bearing the weight of the pipeline, so that the pipe laying task can be completed only by one group of hoisting device, after the pipeline is lowered, the bearing beam is further used as a fixed pipeline, the middle section space and the construction device are fully utilized, and the cost is greatly saved; (4) the upper end and the lower end of the pipeline are respectively fixed through the straight pipe support and the bent pipe support, the straight pipe support is welded with the bearing beam, and the bent pipe support is fixed through concrete, so that the pipeline can be prevented from being bent due to overlong length; (5) when the straight pipe support is welded, the upper end and the lower end respectively bear half of the weight of the pipeline by gradually lowering and observing the hoisting weight, so that the stability of the pipeline is ensured; (6) fine sand is filled in the drilled hole to fix the pipe, so that the efficiency is high, the cost is low and the effect is good; (7) the pavilion type steel pipe derrick and the movable pulley block and the fixed pulley block in the hoisting device are fully utilized, and the suspension of a single pipeline with the weight of 30 tons in a limited space in the pit is realized; (8) the method realizes that a plurality of drainage and mud discharge pipelines are put down in a drill hole with the depth of 250 meters and the diameter of 1.2 meters in full length without a bracket for the first time, provides a valuable reference function for subsequent engineering, and enriches the ideas of engineering design and scheme planning.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings:
referring to fig. 1, a method for lowering pipes in a vertical borehole includes the following steps:
(A) and constructing a vertical drilling hole with the aperture of 1.2m and the depth of 250m by using an LM-250 raise boring machine in the middle section of-380 m, wherein the bottom of the drilling hole is communicated with the roadway in the middle section of-630 m.
(B) And sequentially lowering pipelines 7 to be lowered into the drill holes in a manner of welding sleeves among the pipe sections, fixing the pipelines 7 through a support device after each pipeline 7 is lowered, and butting the bottoms of the pipelines 7 with corresponding horizontal pipelines in a through roadway through elbows.
The detailed measures of the step (B) are as follows:
(B.1) installing a pavilion type steel pipe derrick 1 with the height of 11m at a drilling hole opening position of a middle section of-380 m, and installing a hoisting device on the derrick 1. The hoisting device comprises a 5-ton stable vehicle 5 arranged at the middle section, a 50-ton 4-door fixed pulley block 2 arranged at the top of the derrick 1 and a 50-ton 4-door movable pulley block 3 provided with the lifting hook 4, wherein the movable pulley block 3 is positioned below the fixed pulley block 2; and a 6V multiplied by 30+ FC-phi 20-1870 steel wire rope on the stable vehicle 5 bypasses the fixed pulley block 2 from the top and bypasses the movable pulley block 3 from the bottom, and then the tail end of the steel wire rope is fixedly connected with the derrick 1. It can be known through calculation that the maximum weight of a single drainage pipeline is 27 tons, and the maximum tensile force borne by a single steel wire rope is 3.38 t. The breaking tension of the steel wire rope is 242KN, the calculated safety coefficient is 7.3, and the requirement that the safety coefficient is not lower than 5 is met.
4 pieces of 40b I-steel are also arranged at the hole openings to be used as bearing beams 6.
Then, the pipelines 7 are sequentially lowered and fixed:
(B.2) for the currently-lowered pipeline 7, taking a phi 377 multiplied by 12mm seamless steel pipe and blanking in sections according to the length of 6m to obtain a plurality of sections of the pipeline 7, wherein one end of each section of the pipeline is welded with a sleeve respectively.
And (B.3) installing an elevator at the upper end of the first section of pipe section near the drilling hole, hoisting the first section of pipe section by using the lifting hook 4 and the elevator of the hoisting device, and then lowering the first section of pipe section into the drilling hole.
(B.4) when the elevator on the current lowering pipe section reaches the position of the bearing beam 6, using the bearing beam 6 to support the current elevator, then disconnecting the lifting hook 4 from the elevator, using the lifting hook 4 and another auxiliary elevator to lift the next pipe section, and sleeving the lower end of the next pipe section with the sleeve at the upper end of the previous pipe section and welding in an aligned mode; and then the lowering of the next pipe section is started.
(B.5) repeating step (B.4) until the upper end of the last section of pipe constituting the pipeline 7 is lowered to the position of the load beam 6.
During the lowering, the problem that the pipelines 7 are mutually scraped and clamped in the lowering process can be solved by utilizing the measure lantern ring with certain taper at the mouth part.
(B.6) using the lifting hook 4 to lift the upper end of the current lowering pipeline 7, and moving the pipeline 7 to a position close to the hole wall of the drill hole; each pipeline 7 corresponds to a group of support devices respectively, each support device comprises a straight pipe support 10 and an elbow pipe support 11, the straight pipe support 10 is welded at the upper end of the pipeline 7, and the elbow pipe support 11 is welded at the lower end of the pipeline 7; the use of simultaneous fixation of the upper and lower ends prevents the pipe 7 from bending in the borehole.
(B.7) welding the upper end of the straight pipe support 10 with the bearing beam 6; so far, the lowering and fixing of the current pipeline 7 are completed.
Preferably, the hoisting device is provided with a force measuring device for detecting the current hoisting weight; the force measuring device may be a force gauge mounted at the hook 4. When the straight pipe support 10 is welded, firstly, the pipeline 7 is placed down to enable the bottom of the pipeline 7 to be in contact with the bottom of a drill hole, then the force measuring device is observed while the pipeline 7 is gradually placed down, when the weight borne by the hoisting device is 40-60% of the total weight of the pipeline 7, the placing is stopped, the straight pipe support 10 at the upper end is welded with the bearing beam 6, the upper end and the lower end are enabled to bear about half of the weight of the pipeline 7 respectively, and the stability of the pipeline 7 is guaranteed.
(B.8) repeating steps (B.2) to (B.7) until all the pipe lines 7 are lowered and fixed.
(C) After all pipelines 7 are placed, sealing the section between the bottom of the drill hole and the through lane by using a steel plate, an anchor rod and the like, and conveying concrete 9 to the bottom of the drill hole by using a conveying pump until the height of the concrete 9 exceeds the section between the hole bottom and the through lane; after the concrete 9 is solidified, fine sand 8 is poured into the hole from the hole opening of the drilling hole to fix the pipe.
And finishing pipe laying construction.
At present, a newly-built-in central water pump room of-630 m is drained for more than half a year through a drainage pipeline in a drill hole, and the pipeline is stable and has no vibration during drainage.
In the aspect of economic benefit, the method utilizes a raise boring machine to construct a drill hole with the aperture of 1.2m and the depth of 250m and install 6 drainage pipelines, the unit price is 4500 yuan/m, and the total cost is as follows: 4500 × 250=112.5 ten thousand yuan. And according to the planning design of a drainage system, a-930 m drainage system is transformed in the next half year of 2019, the drainage pipeline adopts the method, a ventilation drainage well (-630 m to-930 m, a measure vertical well with the diameter of 1.2m, which is abandoned at present) is used as an installation path during the construction of the original blind vertical well, and the cost can be saved by 4500 yuan/m × 300m =135 ten thousand yuan. The innovation of the pipeline process can save 247.5 ten thousand yuan of investment for the gold mine in the new city.

Claims (4)

1. A method for lowering pipes in a vertical drilled hole through multiple pipelines is characterized by comprising the following steps:
(A) constructing a vertical drilling hole at the coordinate position of the pipe orifice of the upper middle section where the pipeline needs to be put down, wherein the bottom of the hole is communicated with a horizontal through tunnel of the next middle section;
(B) sequentially lowering the prefabricated pipe sections into the vertical drill holes in a casing welding mode to form a pipeline (7), fixing the pipeline (7) through a support device after each lowering of one pipeline (7), and butting the bottom of the pipeline (7) with a corresponding horizontal pipeline in a through roadway through an elbow;
the detailed measures of the step (B) are as follows:
(B.1) arranging a derrick (1) and a fixed bearing beam (6) which parallelly crosses the hole at the hole of the upper section, and mounting a hoisting device on the derrick (1); sequentially lowering and fixing the pipelines (7);
(B.2) for the currently lowered pipeline (7), taking a steel pipe to perform each pipe section, and welding a sleeve at the upper end of each pipe section;
(B.3) mounting an elevator at one end, close to the casing, of the first pipe section near the orifice, hoisting the first pipe section by using a lifting hook (4) of the hoisting device and the elevator, and then lowering the first pipe section into the vertical drill hole;
(B.4) when the elevator on the current lowered pipe section reaches the position of the bearing beam (6), supporting the current elevator by using the bearing beam (6), then disconnecting the lifting hook (4) from the elevator, lifting the next pipe section by using the lifting hook (4) and another auxiliary elevator, aligning and sleeving the lower end of the next pipe section with the upper end of the previous pipe section, and then welding; continuing to lower the next section of pipe section;
(B.5) repeating the step (B.4) until the upper end of the last section of the pipeline (7) forming the currently lowered pipeline is lowered to the position of the bearing beam (6);
(B.6) using the lifting hook (4) to lift the upper end of the currently lowered pipeline (7), and moving the currently lowered pipeline (7) to a position close to the hole wall of the vertical drill hole; each pipeline (7) corresponds to a group of support devices respectively, each support device comprises a straight pipe support (10) and an elbow pipe support (11), the straight pipe support (10) is welded at the upper end of the pipeline (7), and the elbow pipe support (11) is welded at the lower end of the pipeline (7);
(B.7) welding the upper end of the straight pipe support (10) with the bearing beam (6); so far, the lowering and fixing of the current pipeline (7) are completed;
(B.8) repeating the steps (B.2) to (B.7) until all the pipelines (7) are lowered and fixed.
2. The method of claim 1, wherein the method further comprises: the hoisting device is provided with a force measuring device for detecting the current hoisting weight; in the step (B.7), firstly, lowering the pipeline (7) to enable the bottom of the pipeline (7) to be in contact with the bottom of the vertical drill hole, then gradually lowering the pipeline (7) and observing the force measuring device, stopping lowering when the weight born by the hoisting device is 40-60% of the total weight of the pipeline (7), and welding the straight pipe support (10) at the upper end with the bearing beam (6).
3. The method of claim 1, wherein the method further comprises: the hoisting device comprises a stable vehicle (5) arranged at the middle section of the upper part, a fixed pulley block (2) arranged at the top of the derrick (1) and a movable pulley block (3) provided with the lifting hook (4), wherein the movable pulley block (3) is positioned below the fixed pulley block (2); and a traction rope on the stable vehicle (5) bypasses the fixed pulley block (2) from the top and bypasses the movable pulley block (3) from the bottom, and then the tail end of the traction rope is fixedly connected with the derrick (1).
4. The method of claim 1, further comprising the step (C): after all pipelines (7) are completely placed, sealing the section between the bottom of the vertical drill hole and the through lane, and conveying concrete (9) to the bottom of the drill hole until the height of the concrete (9) exceeds the section between the hole bottom and the through lane; after the concrete (9) is solidified, fine sand (8) is poured into the hole from the hole opening of the drilling hole to fix the pipe.
CN201910293155.1A 2019-04-12 2019-04-12 Method for lowering pipes in vertical drilling holes through multiple pipelines Active CN110005354B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2239500Y (en) * 1995-07-19 1996-11-06 高志伟 Well pipe placing machine
CN202073568U (en) * 2011-03-03 2011-12-14 中煤第七十一工程处 Vertical shaft pipeline fixing device
CN102535490A (en) * 2012-03-06 2012-07-04 北京交通大学 Method for dewatering foundation pit by using bored cast-in-place pile
CN103274325A (en) * 2013-06-06 2013-09-04 枣庄矿业集团中兴建安工程有限公司 Portable jack
CN204960939U (en) * 2015-07-24 2016-01-13 金川集团股份有限公司 A pipeline fixing base for mine shaft
US20180106111A1 (en) * 2015-03-24 2018-04-19 Cameron International Corporation Seabed drilling system
CN108506568A (en) * 2018-06-27 2018-09-07 西安西电开关电气有限公司 The draft gear and traction method of pipeline are lifted in vertical shaft
CN108590738A (en) * 2018-03-01 2018-09-28 王宇曜 Down-hole gas sucking releasing shaft construction method
CN108626482A (en) * 2018-04-23 2018-10-09 西山煤电建筑工程集团有限公司矿建第分公司 The construction method of vertical gas pipe is installed using anti-well drilling machine
CN208603620U (en) * 2018-08-07 2019-03-15 中国水利水电第十四工程局有限公司 A kind of positive well excavation steady rope device of cage of vertical shaft

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2239500Y (en) * 1995-07-19 1996-11-06 高志伟 Well pipe placing machine
CN202073568U (en) * 2011-03-03 2011-12-14 中煤第七十一工程处 Vertical shaft pipeline fixing device
CN102535490A (en) * 2012-03-06 2012-07-04 北京交通大学 Method for dewatering foundation pit by using bored cast-in-place pile
CN103274325A (en) * 2013-06-06 2013-09-04 枣庄矿业集团中兴建安工程有限公司 Portable jack
US20180106111A1 (en) * 2015-03-24 2018-04-19 Cameron International Corporation Seabed drilling system
CN204960939U (en) * 2015-07-24 2016-01-13 金川集团股份有限公司 A pipeline fixing base for mine shaft
CN108590738A (en) * 2018-03-01 2018-09-28 王宇曜 Down-hole gas sucking releasing shaft construction method
CN108626482A (en) * 2018-04-23 2018-10-09 西山煤电建筑工程集团有限公司矿建第分公司 The construction method of vertical gas pipe is installed using anti-well drilling machine
CN108506568A (en) * 2018-06-27 2018-09-07 西安西电开关电气有限公司 The draft gear and traction method of pipeline are lifted in vertical shaft
CN208603620U (en) * 2018-08-07 2019-03-15 中国水利水电第十四工程局有限公司 A kind of positive well excavation steady rope device of cage of vertical shaft

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