CN111827948A - Open hole fishbone production increasing and sieve tube well completion integrated tool - Google Patents
Open hole fishbone production increasing and sieve tube well completion integrated tool Download PDFInfo
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- CN111827948A CN111827948A CN202010797071.4A CN202010797071A CN111827948A CN 111827948 A CN111827948 A CN 111827948A CN 202010797071 A CN202010797071 A CN 202010797071A CN 111827948 A CN111827948 A CN 111827948A
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- fishbone
- branch
- open hole
- sand
- well completion
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000004576 sand Substances 0.000 claims abstract description 42
- 230000000903 blocking effect Effects 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 210000002445 nipple Anatomy 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000006262 metallic foam Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 230000000638 stimulation Effects 0.000 claims 3
- 230000010354 integration Effects 0.000 claims 1
- 210000002268 wool Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 14
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 8
- 230000002265 prevention Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 7
- 230000009466 transformation Effects 0.000 abstract description 5
- 238000005553 drilling Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- -1 natural gas hydrates Chemical class 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Artificial Fish Reefs (AREA)
Abstract
The invention relates to the technical field of marine oil and gas resources and sea area natural gas hydrate exploitation equipment, in particular to an open hole fishbone yield increase and sieve tube well completion integrated tool, which can realize that measures such as reservoir transformation, sand prevention, production tube column lowering and the like can be completed only by one trip of drilling, has small damage to a reservoir, greatly reduces the operation cost, optimizes the construction process, reduces the implementation of complex procedures, shortens the operation time, improves the sea area natural gas hydrate exploitation economic and technical indexes, accelerates the industrialization process and improves the practicability and reliability; the fishbone protective device comprises a fishbone branch short section, a sand blocking medium and an outer protective cover, wherein the sand blocking medium is arranged on the outer wall of the fishbone branch short section.
Description
Technical Field
The invention relates to the technical field of exploitation equipment of marine oil and gas resources and sea natural gas hydrates, in particular to an open hole fishbone yield increasing and sieve tube well completion integrated tool.
Background
As is well known, with the successful implementation of the second round of trial production of the natural gas hydrate in the sea area, China becomes the first world for trial production of the natural gas hydrate in the sea area by adopting a horizontal well drilling and production technology, and an important step is taken in the process of promoting industrialization. The natural gas hydrate resource amount in the sea area of China is huge, but how to give full play to the gas well production energy is a big problem to be faced at present. The purpose of connecting the stratum and the shaft can be achieved by adopting a reservoir production increasing technology, the exposed area of the production layer is increased, the productivity is improved, and meanwhile, an effective sand prevention mode needs to be combined to prevent adverse effects caused by reservoir sand production.
The conventional fracturing and perforating processes have the defects that fracturing fluid is easy to damage reservoirs, a large amount of chemical additives exist in construction fluid, environmental pollution is easy to cause, the construction period is long, a tubular column needs to be pulled out and put down for many times, the operation cost is high, and the like. The multi-branch fishbone open hole well completion technology applies hydraulic rock breaking to form a plurality of branch slim holes in a horizontal well section in a reservoir, the exposed area and the drainage channel of the reservoir are increased, a large number of micro cracks can be formed in an eyelet area due to the hydraulic pressure building effect, more crack systems can be communicated, and the seepage capability near the wellbore can be greatly improved; the gas directly flows into the borehole along the well body in the radial direction, so that the productivity and the recovery rate of the gas well are improved, the jet flow production increasing technology is a typical application mode of the jet flow production increasing technology, technical measures such as casing running, well cementation, perforation, fracturing and the like in conventional operation are replaced, the construction links are reduced, and the operation risk and the operation cost are reduced.
The sand control of the mechanical sieve tube is one of the widely used sand control modes, and the sand control sieve tube is hung right at a production layer position at the bottom of a well, so that the aims of allowing fluid to pass and blocking formation sand are fulfilled. The sand control process of the mechanical sieve tube is simple in technology and convenient to construct, but has the problems that a sand blocking layer is thin, fine sand is easy to invade and block, and the yield cannot reach the expectation. Particularly for a hydrate reservoir with high argillaceous content, the stratum sand production is extremely fine, and the sand blocking performance and the flow performance of the sieve tube cannot be simultaneously considered, so that the reservoir transformation process technology must be combined.
Although the fishbone yield increasing technology is used for oil and gas fields, the application of the fishbone yield increasing technology to hydrate reservoirs is not carried out at present, the conventional storage, modification and sand prevention technology needs to take out and put down a pipe column for multiple times to carry out related program operation, the construction is complex, and the high daily cost of offshore operation still cannot meet the economic requirement of the industrialization effect, so that the storage, modification and sand prevention integrated well completion tool needs to be optimized and innovated to form, thereby greatly shortening the offshore operation time, reducing the operation cost, improving the economic and technical indexes of marine natural gas hydrate exploitation and accelerating the industrialization process.
Disclosure of Invention
In order to solve the technical problems, the invention provides the open hole fishbone yield increasing and sieve tube well completion integrated tool which can complete measures such as reservoir transformation, sand prevention, production tube column descending and the like only by one trip, has small damage to the reservoir, greatly reduces the operation cost, optimizes the construction process, reduces the implementation of complex procedures, shortens the operation time, improves the economic and technical indexes of sea area natural gas hydrate exploitation, accelerates the industrialization process and improves the practicability and reliability.
The invention discloses an open hole fishbone production increase and sieve tube well completion integrated tool, which comprises fishbone branch short sections, a sand blocking medium and an outer protective cover, wherein the sand blocking medium is arranged on the outer wall of each fishbone branch short section, the outer protective cover is arranged on the outer wall of the sand blocking medium, and the fishbone branch short sections, the sand blocking medium and the outer protective cover are all tubular.
According to the open hole fishbone production increasing and sieve tube well completion integrated tool, a plurality of groups of branch pipes are mounted in the fishbone branch short section, one end of each branch pipe is fixed at the power end in the fishbone branch short section in a sealing mode, and the other end of each branch pipe can move according to a designed track and extend out of the fishbone branch short section.
According to the open hole fishbone yield increasing and sieve tube well completion integrated tool, the number of the plurality of groups of branch pipes can be 3-4.
The fishbone branch short section of the open hole well is different from a conventional fishbone branch pipe, does not contain a production valve and is a non-perforated pipe.
According to the open hole fishbone production increasing and sieve tube well completion integrated tool, a plurality of groups of check valves are uniformly embedded on the outer wall of the fishbone branch short section, and the plurality of groups of check valves are communicated with the inside of the fishbone branch short section.
According to the open hole fishbone yield increasing and sieve tube well completion integrated tool, the sand blocking medium can be one of a multi-layer filter screen, metal cotton, novel metal foam and gap materials.
According to the open hole fishbone yield increasing and sieve tube well completion integrated tool, the type of the outer protection cover can be one of bridge type, slit type, wire winding type and precision compounding type.
Compared with the prior art, the invention has the beneficial effects that:
1) the fishbone yield increasing technology is combined with the sieve tube sand prevention technology, and two benefits can be achieved only by putting one tool: the fishbone yield increasing technology can realize effective communication to the reservoir, avoids complex processes of hydraulic fracturing, perforation and other storage and improvement measures, reduces damage to the hydrate reservoir and is simpler to construct; the preferable mechanical sand control screen pipe is used for dealing with the condition of fine sand production of hydrate reservoir silt, so that the migration of formation sand can be effectively prevented, and the high efficiency and stable yield of a gas well can be kept.
2) The method can realize the measures of reservoir transformation, sand prevention, production string descending and the like only by one trip of drilling, has small damage to the reservoir, greatly reduces the operation cost, optimizes the construction process, reduces the progress of complex procedures, shortens the operation time, improves the economic and technical indexes of sea area natural gas hydrate exploitation, and accelerates the industrialization process.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side cross-sectional enlarged structural view of the branched short section of the fishbone in FIG. 1;
in the drawings, the reference numbers: 1. a fishbone branch short section; 2. a sand blocking medium; 3. an outer protective cover; 4. a one-way valve.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 to 2, the open hole fishbone production increasing and sieve tube well completion integrated tool comprises a fishbone branch short section 1, a sand blocking medium 2 and an outer protective cover 3, wherein the sand blocking medium 2 is arranged on the outer wall of the fishbone branch short section 1, the outer protective cover 3 is arranged on the outer wall of the sand blocking medium 2, and the fishbone branch short section 1, the sand blocking medium 2 and the outer protective cover 3 are all tubular; the branch short section 1 of fishbone can support sand-blocking medium 2 and outer protective cover 3 as the base pipe, and sand-blocking medium 2 can block formation sand, prevents that it from getting into the inside of branch short section 1 of fishbone and in the pit shaft, and outer protective cover 3 can play the effect of fluid water conservancy diversion, conveniently protects sand-blocking medium 2, slows down grit erosion equipment simultaneously.
The fishbone yield-increasing and sieve tube well completion integrated tool for the open hole well is characterized in that a plurality of groups of branch pipes are installed in the fishbone branch short section 1, one end of each branch pipe is fixed at the power end in the fishbone branch short section 1 in a sealing mode, and the other end of each branch pipe can move according to a designed track and extend out of the fishbone branch short section 1.
According to the open hole fishbone yield increasing and sieve tube well completion integrated tool, the number of the plurality of groups of branch pipes can be 3-4.
According to the open hole fishbone production-increasing and sieve tube well completion integrated tool, the fishbone branch short section 1 is different from a conventional fishbone branch pipe, a production valve is not arranged on the fishbone branch short section, and the fishbone branch short section 1 is a non-perforated pipe.
According to the open hole fishbone yield-increasing and sieve tube well completion integrated tool, a plurality of groups of check valves 4 are uniformly embedded on the outer wall of the fishbone branch short section 1, and the plurality of groups of check valves 4 are communicated with the inside of the fishbone branch short section 1.
According to the tool integrating fishbone production increase and sieve tube well completion of the open hole well, the sand blocking medium 2 can be one of a multi-layer filter screen, metal cotton, novel metal foam and gap materials.
According to the open hole fishbone yield increasing and sieve tube well completion integrated tool, the type of the outer protective cover 3 can be one of bridge type, slit type, wire winding type and precision composite type.
The tool for integrating fishbone production increase and screen pipe well completion of the open hole well has the advantages that the outer surface of each fishbone branch short section 1 is in one direction at every 90 degrees and is divided into four groups, and each group can be provided with 4-6 one-way valves 4.
The invention relates to an open hole fishbone yield increasing and sieve tube well completion integrated tool, which comprises a plurality of groups of devices which are spliced end to form a tube bundle when in work, the tube bundle is put into a shaft and reaches a specified depth, high-pressure fluid is pumped into the tube bundle from the top end of the tube bundle, the high-pressure fluid enters a fishbone branch short section 1 and pushes a plurality of groups of branch pipes on the fishbone branch short section 1 to move according to a set track and extend into the stratum outside the fishbone branch short section 1, a plurality of groups of one-way valves 4 can block the fluid in the fishbone branch short section 1 and prevent the fluid from flowing into the stratum through a sand blocking medium 2 and an outer protective cover 3, after the branch pipes move and extend, the work is accomplished down to the tube bank, and during subsequent production, formation fluid gets into check valve 4 through the annular gap between fishbone branch nipple joint 1 and the sand blocking medium 2, gets into nipple joint 1 afterwards, is exploited to ground.
The main functions realized by the invention are as follows: the tool can realize the measures of reservoir transformation, sand prevention, production string descending and the like only by one trip of drilling, has small damage to the reservoir, greatly reduces the operation cost, optimizes the construction process, reduces the progress of complex procedures, shortens the operation time, improves the economic and technical indexes of sea area natural gas hydrate exploitation, and accelerates the industrialization process.
The tool integrating fishbone yield increase and sieve tube well completion of the open hole well provided by the invention has the advantages that the installation mode, the connection mode or the arrangement mode are common mechanical modes, and the tool can be implemented as long as the beneficial effects of the tool are achieved.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a barefoot well fishbone increase production and screen pipe well completion integration instrument, its characterized in that, fishbone branch nipple joint (1), keep off sand medium (2) and outer safety cover (3), keep off sand medium (2) and install on the outer wall of fishbone branch nipple joint (1), outer safety cover (3) are installed on the outer wall of keeping off sand medium (2), fishbone branch nipple joint (1), keep off sand medium (2) and outer safety cover (3) are the tubulose.
2. The open hole fishbone stimulation and screen pipe well completion integrated tool according to claim 1, characterized in that a plurality of groups of branch pipes are installed in the fishbone branch pup joint (1), one end of each group of branch pipes is hermetically fixed at a power end in the fishbone branch pup joint (1), and the other end of each group of branch pipes can move according to a designed track and extend out of the fishbone branch pup joint (1).
3. The tool of claim 2, wherein the number of the plurality of groups of branch pipes is 3-4.
4. The open hole fishbone stimulation and screen well completion integrated tool of claim 1, characterized in that the fishbone branch sub (1) is different from a conventional fishbone branch pipe, and does not comprise a production valve thereon, and the fishbone branch sub (1) is a non-perforated pipe.
5. The open hole fishbone production-increasing and screen pipe well completion integrated tool of claim 1, characterized in that a plurality of sets of check valves (4) are uniformly embedded on the outer wall of the fishbone branch short section (1), and the plurality of sets of check valves (4) are communicated with the interior of the fishbone branch short section (1).
6. The tool of claim 1, wherein the sand blocking medium (2) is one of a multi-layer filter screen, metal wool, novel metal foam and gap materials.
7. An open hole fishbone stimulation and screen completion integrated tool as claimed in claim 1, characterized in that the outer protective cover (3) is of the type of bridge, slotted, wire-wound, precision-composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797071.4A CN111827948A (en) | 2020-08-10 | 2020-08-10 | Open hole fishbone production increasing and sieve tube well completion integrated tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010797071.4A CN111827948A (en) | 2020-08-10 | 2020-08-10 | Open hole fishbone production increasing and sieve tube well completion integrated tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111827948A true CN111827948A (en) | 2020-10-27 |
Family
ID=72919643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010797071.4A Pending CN111827948A (en) | 2020-08-10 | 2020-08-10 | Open hole fishbone production increasing and sieve tube well completion integrated tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111827948A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282720A (en) * | 2020-11-19 | 2021-01-29 | 广州海洋地质调查局 | On-site construction method of fishbone well and corresponding matched equipment |
| CN113047819A (en) * | 2021-03-09 | 2021-06-29 | 中国石油天然气集团公司 | Sand control screen pipe and application thereof |
-
2020
- 2020-08-10 CN CN202010797071.4A patent/CN111827948A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112282720A (en) * | 2020-11-19 | 2021-01-29 | 广州海洋地质调查局 | On-site construction method of fishbone well and corresponding matched equipment |
| CN112282720B (en) * | 2020-11-19 | 2023-11-10 | 广州海洋地质调查局 | Site construction method of fishbone well and corresponding matched equipment |
| CN113047819A (en) * | 2021-03-09 | 2021-06-29 | 中国石油天然气集团公司 | Sand control screen pipe and application thereof |
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