WO2011069340A1 - Structure de puits de pétrole et de gaz facilitant l'extraction d'une rame de filtre de fond de puits et procédé d'extraction de rame - Google Patents

Structure de puits de pétrole et de gaz facilitant l'extraction d'une rame de filtre de fond de puits et procédé d'extraction de rame Download PDF

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Publication number
WO2011069340A1
WO2011069340A1 PCT/CN2010/002015 CN2010002015W WO2011069340A1 WO 2011069340 A1 WO2011069340 A1 WO 2011069340A1 CN 2010002015 W CN2010002015 W CN 2010002015W WO 2011069340 A1 WO2011069340 A1 WO 2011069340A1
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WO
WIPO (PCT)
Prior art keywords
downhole filter
oil
particles
filter string
downhole
Prior art date
Application number
PCT/CN2010/002015
Other languages
English (en)
Chinese (zh)
Inventor
裴柏林
房娜
Original Assignee
安东石油技术（集团）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 安东石油技术（集团）有限公司 filed Critical 安东石油技术（集团）有限公司
Priority to CA2783392A priority Critical patent/CA2783392A1/fr
Priority to GB201211951A priority patent/GB2489161B/en
Priority to NO20120798A priority patent/NO346845B1/no
Priority to US13/514,505 priority patent/US20120279716A1/en
Publication of WO2011069340A1 publication Critical patent/WO2011069340A1/fr

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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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or 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
    • E21B43/02—Subsoil filtering
    • E21B43/08—Screens or liners
    • 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
    • E21B43/04—Gravelling of 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
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
    • E21B49/04—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using explosives in boreholes; using projectiles penetrating the wall

Definitions

  • Oil and gas wells here refer to generalized production wells in oil and gas field development, including oil wells, gas wells, natural gas wells, injection wells, etc. Background technique
  • the completion structures of most mechanical sand control wells include oil and gas wells and downhole filter columns in oil and gas wells. Vertical and horizontal wells, inclined wells, high-angle wells and horizontal wells.
  • reference numeral 1 in Fig. 1 indicates a well wall
  • reference numeral 2 indicates a downhole filter string
  • reference numeral 3 indicates an annulus between the downhole filter string and the well wall
  • attached Figure 4 indicates the packer that suspends the downhole filter string.
  • the downhole filter column here is a generalized downhole filter column, which can be used in various forms, such as:
  • the first case is a non-throttle function downhole filter column, and then the throttling function downhole filter tube
  • the column is just a sand control filter, also known as a sand control tube.
  • the second type is a filter with a flow control function, that is, a flow control filter column, also called a flow control screen.
  • the flow control filter has a flow control function and has a filtering function.
  • the filtering function sometimes prevents the turbulent flow of the granulating medium outside the flow control filter from entering the wellbore, and also prevents the formation sand from entering the wellbore. .
  • the flow control function of the flow control filter also has a throttling function.
  • a downhole filter string is one that has one or more downhole filters connected in series. For example, if a sand pipe with a total length of 300 meters is placed in a horizontal well, 30 sand pipes of about 10 meters are connected in series.
  • the downhole filter column is stored outside
  • the gravel includes quartz sand or ceramsite; the other case is that there is no filler outside the downhole filter column, if the downhole filter column There is no filling outside.
  • the produced formation sand will also fill the annulus between the filter column and the wall of the well.
  • Figure 5 shows the filtration under the well. Formation sand or artificially filled gravel accumulated outside the column.
  • the extracted downhole filter string needs to be reused to save a lot of expenses
  • the technical problem to be solved by the present invention is to provide an oil and gas well structure that facilitates the extraction of the downhole filter string and a method of extracting the downhole filter string from the oil and gas well.
  • the present invention adopts the following technical solutions:
  • the present invention relates to an oil and gas well structure for facilitating the extraction of a downhole filter string, comprising a wellbore wall and a downhole filter string inserted into the oil and gas well, the downhole filter
  • the end of the pipe string near the wellhead is the upper end of the filter pipe string, the upper end of the filter pipe string is fixedly connected with the well wall, and an annular space is formed between the downhole filter pipe string and the well wall; the downhole filter pipe string and The annulus between the well walls is filled with ultra-light particles, wherein the ultra-light particles have a density close to or equal to the density of the ultra-light particle carrying liquid, and the ultra-light particle carrying liquid is used for carrying the ultra-light particles.
  • the liquid in the annulus or backflushed from the ultra-light particles carries out the liquid of the annulus.
  • the density difference between the ultralight particles and the ultralight particle carrier fluid ranges from -0.35 to +0.35, inclusive.
  • the density difference between the ultra-light particles and the ultra-light particle carrying liquid ranges from -0.3 to +0.3, inclusive.
  • the ultra-light particles are particles having an average particle diameter of 0.05 to 1.2 mm and a true density of 0.7 to 1.3 g/cm 3 .
  • the ultra-light particles are particles having an average particle diameter of 0.05 to 0.8 mm and a true density of 0.94 to 1.08 g/cm 3 .
  • the ultra-light particles are high molecular polymer particles.
  • the ultra-light particles are high-density polyethylene particles having an average particle diameter of 0.05 to 0.8 mm and a true density of 0.90 to 0.98 g/cm 3 .
  • the ultra-light particles are polypropylene and polyvinyl chloride polymer particles having an average particle diameter of 0.05 to 0.8 mm and a true density of 0.7 to 1.3 g/cm 3 .
  • the ultra-light particles are styrene and divinylbenzene crosslinked copolymer particles having an average particle diameter of 0.05 to 0.8 mm and a true density of 0.94 to 1.08 g/cm 3 .
  • the invention also discloses a method for proposing a downhole filter string from the oil and gas well structure for facilitating the extraction of a downhole filter string, the method comprising the steps of:
  • the step of emptying the ultra-light particles by the recoil carrier liquid is connected by using a liquid injection pipe and a downhole filter pipe column, directly injecting into the control flow filter column
  • Light particle carrying liquid due to the flow control function of the flow control filter column, the injection liquid is injected into the ultralight particles from the control flow pipe column, and the underground fluid is filtered through the upper filter pipe column.
  • the ultra-light particles accumulated outside the column are emptied.
  • the step of emptying the ultra-light particles by the recoil carrier liquid is to insert the liquid injection pipe into the downhole filter pipe column, and the liquid injection pipe is used for injecting the liquid;
  • the lower part of the injection pipe has an opening, and the upper part of the opening of the injection pipe is provided with a sealing ring, the outer diameter of the sealing ring is substantially the same as the inner diameter of the downhole filter column, and the liquid injection method is a segmented injection: the liquid injection pipe Stepping from the top of the downhole filter string to the bottom of the downhole filter column for segmented injection, segmenting the ultra-light particles outside the downhole filter column, outside the previous section of the downhole filter column near the wellhead After the ultra-light particles are emptied, the injection tube is further inserted into the downhole filter column for a period of time until the downhole filter tube column is completely emptied; or the injection tube can be continuously moved to inject the liquid until the well filter column is emptied outside the column.
  • the step of flushing the ultra-light particles by the recoil carrier liquid is to insert the injection pipe into the downhole filter column, and the injection pipe is used for injection.
  • the liquid injection pipe has an opening at a lower portion thereof, and a sealing ring is disposed at an upper portion of the opening of the liquid injection pipe, and an outer diameter of the sealing ring is substantially the same as an inner diameter of the downhole filter pipe string, and the liquid injection method is a segment injection:
  • the injection pipe is gradually advanced from the top of the downhole filter pipe string to the bottom of the downhole filter pipe column for segmental injection, and the ultra-light particles outside the downhole filter pipe column are segmented and emptied, and the former section of the downhole filter near the wellhead is used.
  • the injection tube is further inserted into the downhole filter column for a period of time until the downhole filter column is completely emptied.
  • the injection tube can be moved by continuously moving the injection tube until the empty filter column is emptied. Light particles.
  • the ultralight particle carrier liquid of the present invention is water or an aqueous solution.
  • the invention utilizes ultra-light particle carrying liquid with a density of about 1 g/cm 3 to select ultra-light particles with a real density and a density of the carrying liquid very close, so that the carrier liquid can easily carry ultra-light particles to the downhole filter.
  • the annulus between the string and the borehole wall fills and fills the annulus between the downhole filter string and the borehole wall, a portion of the carrier fluid enters the downhole filter string and returns to the ground, and a portion of the carrier fluid passes through the borehole wall. Infiltrating into the formation; eventually forming a completion structure filled with ultra-light particles in the annulus between the downhole filter string and the wellbore.
  • the ultra-light particles occupy the annulus between the downhole filter string and the borehole wall, and also block the accumulation of formation sand within the annulus between the downhole filter string and the borehole wall.
  • the invention selects particles with an average particle diameter of 0.05-1.2 mm and a true density of 0.7-l, 3 g/cm 3 as ultra-light particles filled in the annulus between the downhole filter column and the well wall, when it is necessary to propose a downhole
  • the ultra-light particles accumulated outside the downhole filter column can be easily emptied. Since the density of the ultra-light particles and the density of the carrier liquid are very close, the carrier liquid of the low-speed cycle can be easily ultra-light.
  • the particles are brought to the surface to empty the annulus outside the downhole filter column, so that the downhole filter column can be easily extracted from the well. Meet the requirements for proposing a downhole filter string.
  • the method of the invention is simple and feasible, overcomes the difficulty in extracting the downhole filter column in the oil well, facilitates the production, and the cleaned ultra-light particles can be reused, thereby greatly reducing the production cost.
  • Figure 1 is a schematic view of the completion structure of the background art.
  • FIG. 2 is a schematic view of a completion structure according to Embodiment 1 of the present invention.
  • FIG 3 is an ultra-light outside the column of the recoil empty filter according to Embodiment 2 of the present invention; Schematic diagram of the flow path of the particles carrying the particles.
  • Fig. 4 is a schematic view showing the flow path of the ultra-light particles carrying the ultra-light particles outside the column of the backflushing filter according to the third embodiment of the present invention.
  • Fig. 5 is a schematic view showing the flow path of the ultra-light particles carrying the ultra-light particles outside the column of the backflushing filter according to the fourth embodiment of the present invention.
  • FIG. 6 is a schematic view showing the structure of an oil and gas well after emptying ultra-light particles according to the present invention. detailed description
  • the present invention provides an oil and gas well structure for facilitating the extraction of a downhole filter string, including an oil and gas well wall 1 and a downhole filter string 2 that is lowered into the oil and gas well, the downhole filter string
  • a packer 4 for suspending the downhole filter string is disposed between one end of the wellhead and the well wall, and an annular space is formed between the downhole filter string and the well wall; between the downhole filter string and the well wall
  • the annulus is filled with ultra-light particles 6.
  • Embodiment 1 Controlled flow filter column extraction method
  • the completion structure according to Embodiment 1, wherein the ultra-light particles are polypropylene and polyvinyl chloride having an average particle diameter of 0.05-0.8 mm and a true density of 0.7-1.3 g/cm 3 .
  • the downhole filter column is a flow control filter column 2, and the downhole filter column is provided with a flow control filter 2-1; the method for lifting the downhole filter column is as follows:
  • the recoil carrying liquid empties the ultra-light particles:
  • the injection pipe column is connected with the downhole filter pipe column to directly inject the carrier liquid into the control flow filter column, because the flow control filter tube
  • the flow control of the column, the carrier liquid is uniformly injected into the ultra-light particles from the various sections of the downhole filter column through the flow control filter; the direction of the arrow in Figure 3 is the method of carrying liquid flow.
  • Embodiment 3 Controlled flow filter column extraction method
  • the completion structure according to Embodiment 1, wherein the ultra-light particles are styrene and divinylbenzene having an average particle diameter of 0.05-0.8 mm and a true density of 0.94-1.08 g/cm 3 .
  • Crosslinking copolymer particles are styrene and divinylbenzene having an average particle diameter of 0.05-0.8 mm and a true density of 0.94-1.08 g/cm 3 .
  • the downhole filter column is a flow control filter column 2, and the downhole filter column is provided with a flow control filter 2-1; the downhole filter column is lifted by:
  • the recoil carrier liquid empties the ultra-light particles: the liquid injection pipe 7 is inserted into the downhole filter pipe string, and the liquid injection pipe is used for injecting liquid; the liquid injection pipe has an opening at the bottom, and a sealing seal is arranged at the upper part of the opening. 8.
  • the outer diameter of the sealing ring is substantially the same as the inner diameter of the downhole filter string.
  • the liquid injection method is a segmented injection: the injection pipe is gradually advanced from the top of the downhole filter pipe column to the bottom of the downhole filter pipe column. The segmented liquid injection and the partial emptying of the ultra-light particles outside the downhole filter column.
  • the sealing ring can inject the liquid carrying the injection pipe into the downhole filter column to block the lower side of the sealing ring.
  • the concentrated carrier liquid impacts the deposition of ultra-light particles.
  • the injection pipe is further inserted into the downhole filter column to the next section until underground.
  • the ultra-light particles outside the filter column are completely emptied; this also avoids the carrier liquid from acting on the ultra-light particles that initiate the deposition, A large amount of carrier liquid.
  • the direction of the arrow in Figure 4 is the flow direction of the carrier fluid.
  • the dashed line in Figure 4 indicates that the injection tube is progressively deep into the sub-filter column for in-situ injection.
  • the manner in which the injection pipe penetrates the downhole filter column can be a continuous hook-and-height approach.
  • the continuously injecting tube is continuously injected, and the ultra-light particles are emptied and the depth is continuously increased until the ultra-light particles outside the downhole filter column are completely emptied.
  • the direction of the arrow in Figure 4 is the method of carrying liquid flow
  • the downhole filter column is a non-throttled downhole filter column 2
  • the method for lifting the downhole filter column is as follows:
  • the recoil carrying liquid empties the ultra-light particles: the liquid injection pipe 7 is inserted into the downhole filter pipe string, and the liquid injection pipe is used for injecting liquid; the top of the liquid injection pipe is provided with a sealing ring 8, the sealing ring The outer diameter of the outer diameter of the downhole filter column is basically the same.
  • the sealing ring of the injection pipe is slightly lower at the outlet port 9 of the injection pipe.
  • the injection method is a segmented injection: the injection pipe is made of a downhole filter. The top of the pipe string is gradually drilled deep into the bottom of the downhole filter pipe column for segmented injection, and the ultra-light particles outside the downhole filter pipe column are emptied by the segment.
  • the sealing ring can inject the liquid carrying pipe into the downhole filter pipe string to block the lower side of the sealing ring in the downhole filter pipe string, and the carrier liquid is difficult to enter the upper side of the sealing ring, thus, Where the upper side is emptied, there will be no more incoming liquid from the filter string, and the concentrated carrying liquid will empty the ultra-light particles that need to be emptied. When the upper section of the downhole filter column near the wellhead is emptied, the ultra-light particles are emptied.
  • the liquid injection pipe is further inserted into the downhole filter pipe column until the underground filter pipe column is completely emptied; this also avoids the running of the liquid, saves a large amount of carrier liquid, and maintains a high flush and ultralight The flow rate of the particles.
  • the direction of the arrow in Fig. 5 is the flow direction of the carrier liquid.
  • the dashed line in the figure indicates that the injection tube is gradually infiltrated into the downhole filter column.
  • the manner in which the injection pipe penetrates the downhole filter column can be intermittently deep. The intermittently moving injection tube is continuously infused until the ultra-light particles outside the downhole filter column are completely emptied.
  • the carrier liquid described in Examples 2-4 may be water or an aqueous solution of a commonly used additive for oil fields in water.
  • the method of the invention is simple and feasible, overcomes the difficulty in extracting the downhole filter column in the oil and gas well, facilitates the production, and the cleaned ultra-light particles can be reused, thereby greatly reducing the production cost.
  • the particle density in this patent refers to the true density of the particles.
  • This patent also includes the secondary injection of a finer downhole filter string into the original downhole filter string in a well where a downhole filter string is already present.

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  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Soil Sciences (AREA)
  • Filtering Materials (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne une structure de puits de pétrole et de gaz facilitant l'extraction d'une rame de filtre de fond de puits, ainsi qu'un procédé d'extraction de la rame de filtre de fond de puits hors du puits de pétrole et de gaz. La structure de puits de pétrole et de gaz comprend une paroi (1) de trou de forage du puits de pétrole et de gaz, et une rame de filtre de fond de puits (2) abaissée dans le puits de pétrole et de gaz. L'extrémité de la rame de filtre de fond de puits (2) à proximité de la tête de puits est connectée rigidement à la paroi (1) du trou de forage. Un anneau est formé entre la rame de filtre de fond de puits (2) et la paroi (1) du trou de forage, et l'anneau est rempli de particules ultralégères dont la densité est proche de ou égale à la densité du fluide porteur qui transporte les particules ultralégères. Le procédé d'extraction de la rame de filtre de fond de puits comprend les étapes suivantes : 1) établir des canaux ; 2) injecter un fluide porteur de particules ultralégères afin d'éliminer complètement les particules ultralégère de l'anneau ; 3) extraire la rame de filtre de fond de puits. La structure permet d'extraire de façon pratique la rame de filtre de fond de puits hors du puits de pétrole et de gaz, ce qui facilite le remplacement et l'entretien de la rame de filtre de fond de puits ainsi que l'ajustement des paramètres du filtre de commande de débit.
PCT/CN2010/002015 2009-12-11 2010-12-10 Structure de puits de pétrole et de gaz facilitant l'extraction d'une rame de filtre de fond de puits et procédé d'extraction de rame WO2011069340A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2783392A CA2783392A1 (fr) 2009-12-11 2010-12-10 Structure de puits de petrole et de gaz facilitant l'extraction d'une rame de filtre de fond de puits et procede d'extraction de rame
GB201211951A GB2489161B (en) 2009-12-11 2010-12-10 Oil-gas well structure for facilitating extracting a downhole filter string and method for extracting the string
NO20120798A NO346845B1 (no) 2009-12-11 2010-12-10 Olje-/gassbrønnstruktur og fremgangsmåte for å trekke ut en filterstreng fra brønnen.
US13/514,505 US20120279716A1 (en) 2009-12-11 2010-12-10 Oil-Gas Well Structure for Facilitating Extracting a Downhole Filter String and Method for Extracting the String

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910250794.6 2009-12-11
CN200910250794A CN101701517B (zh) 2009-12-11 2009-12-11 一种从便于将井下过滤器管柱拔出的油气井中提出井下过滤器管柱的方法

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WO2011069340A1 true WO2011069340A1 (fr) 2011-06-16

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PCT/CN2010/002015 WO2011069340A1 (fr) 2009-12-11 2010-12-10 Structure de puits de pétrole et de gaz facilitant l'extraction d'une rame de filtre de fond de puits et procédé d'extraction de rame

Country Status (6)

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US (1) US20120279716A1 (fr)
CN (1) CN101701517B (fr)
CA (1) CA2783392A1 (fr)
GB (1) GB2489161B (fr)
NO (1) NO346845B1 (fr)
WO (1) WO2011069340A1 (fr)

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CN101701517B (zh) * 2009-12-11 2012-09-05 安东石油技术（集团）有限公司 一种从便于将井下过滤器管柱拔出的油气井中提出井下过滤器管柱的方法
CN101705808B (zh) * 2009-12-11 2012-05-30 安东石油技术（集团）有限公司 套管外存在窜槽的油气井的控流过滤器管柱分段控流方法
CN101705802B (zh) 2009-12-11 2013-05-15 安东石油技术（集团）有限公司 一种油气井生产段防窜流封隔颗粒
US9482070B2 (en) * 2012-05-08 2016-11-01 Shell Oil Company Method and system for sealing an annulus enclosing a tubular element
CN108798548B (zh) * 2017-05-01 2024-01-23 刘向京 一种油气井环空控流短节及其应用方法
CN112267855B (zh) * 2020-09-22 2023-02-07 中国石油天然气股份有限公司 调流控水防砂完井管柱和充砂方法
CN113266304B (zh) * 2021-07-01 2022-06-07 中国石油大学(华东) 一种提升油气井长效生产寿命的穿越型水合物层固井方法

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CN101701517A (zh) * 2009-12-11 2010-05-05 安东石油技术（集团）有限公司 便于将井下过滤器管柱拔出的油气井结构及管柱拔出方法

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GB201211951D0 (en) 2012-08-15
CN101701517A (zh) 2010-05-05
NO20120798A1 (no) 2012-09-10
GB2489161B (en) 2015-05-13
CN101701517B (zh) 2012-09-05
CA2783392A1 (fr) 2011-06-16
US20120279716A1 (en) 2012-11-08
NO346845B1 (no) 2023-01-30

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