CN204186354U - Oil Production Water Control Device - Google Patents

Abstract

The utility model relates to the technical field of devices for oil extraction engineering, in particular to an oil extraction water control device; it comprises a coupling, an upper sealing cylinder, an outer cylinder and a base pipe; the upper end outside of parent tube and the inboard fixed mounting in lower part of coupling are in the same place, and the upper portion outside fixed mounting of parent tube has the top connection, and the lower part inboard of top connection and the upper portion outside fixed mounting of upper seal section of thick bamboo are in the same place, have lower seal section of thick bamboo in the upper portion outside fixed mounting of parent tube, are provided with first annular in the lower part of urceolus. The utility model has the advantages of reasonable and compact structure, convenient to use uses through the cooperation of coupling, upper seal section of thick bamboo, lower seal section of thick bamboo, urceolus, parent tube, interior protection section of thick bamboo, inlayer filter screen, supporting network, outer filter screen and outer protection section of thick bamboo, realizes filtering the purpose of stratum fluid, has the characteristics that the oil strain is effectual, quick detachable and sealed effectual, has made things convenient for the operation, has improved production efficiency, has reduced manufacturing cost.

Description

Oil Production Water Control Device

technical field

The utility model relates to the technical field of devices for oil production engineering, and relates to a water control device for oil production.

Background technique

During the excavation and construction of vertical wells or special wells, it is often necessary to isolate and control water in each section of the oil well according to the formation production pressure difference to prevent bottom water coning. This construction technology needs to be used in the wellbore to prevent bottom water coning during oil production construction operations. However, the conventional oil production and water control device relies on welding to fix the upper joint, lower sealing cylinder and other components with the base pipe. The welding structure is easy to deform the structure of these key components and cause sealing failure. At the same time, the welded parts become a one-time oil extraction device, and the structural size cannot be changed, which leads to a series of problems such as increased cost and the inability of conventional filter screen devices to filter oil effectively.

Contents of the invention

The utility model provides an oil production and water control device, which overcomes the shortcomings of the above-mentioned prior art, and can effectively solve the problem that the conventional oil production and water control device has an integrated structure, and key components are easily deformed, resulting in sealing failure, high cost and oil filtering problems The problem of poor performance.

The technical scheme of the utility model is realized through the following measures: an oil production and water control device, including a coupling, an upper sealing cylinder, an outer cylinder and a base pipe; the outer side of the upper end of the base pipe and the inner side of the lower part of the coupling are fixedly installed together , the upper joint is fixedly installed on the upper outer side of the base pipe, the lower inner side of the upper joint is fixedly installed together with the upper outer side of the upper sealing cylinder, the lower sealing cylinder is fixedly installed on the upper outer side of the base pipe, and a second sealing cylinder is installed on the lower part of the outer cylinder. An annular groove, the upper end surface of the first annular groove is seated on the outer edge of the lower sealing cylinder, a sealing diversion chamber is formed between the base pipe, the upper sealing cylinder, the outer cylinder and the lower sealing cylinder, and at least one seal is arranged on the base pipe The diversion cavity is connected with the diversion hole; the upper snap ring is fixedly connected outside the middle part of the base pipe, and the lower cylinder body with an inner diameter larger than the inner diameter of the lower seal cylinder is integrally fixed at the lower end of the lower seal cylinder. The second ring groove, the upper end surface of the second ring groove is seated on the outer edge of the upper snap ring, a sealed oil chamber is formed between the base pipe, the lower sealing cylinder, the lower cylinder body and the upper snap ring, and there is at least one on the lower sealing cylinder A flow-limiting hole connected with the sealed diversion cavity and the sealed oil cavity; a lower snap ring is fixedly connected to the lower part of the base pipe, and fixedly installed on the outside of the base pipe between the upper snap ring and the lower snap ring from the inside to the outside. The inner protective cylinder, the inner filter screen, the support net, the outer filter screen and the outer protective cylinder are provided with at least two liquid flow grooves along the axial direction on the outer side of the inner protective cylinder, and there are The liquid flow hole corresponding to the liquid flow groove communicates with the liquid flow groove and the sealing oil cavity respectively, and liquid inlet holes are distributed on the outer protection cylinder.

Below is the further optimization or/and improvement to above-mentioned utility model technical scheme:

A wrapping wire is wound around the outer side of the inner protection tube.

The above-mentioned flow-limiting hole is a stepped hole with a large inner diameter at the upper part and a smaller inner diameter at the lower part, and a flow-limiting cylinder is fixedly installed on the upper part of the flow-limiting hole.

The above-mentioned first annular installation groove is provided on the outer side of the upper part of the base pipe, and the first stop ring is clamped in the first annular installation groove. An annular clamping platform is integrally fixed on the inner side of the upper part of the upper joint. The lower end seat of the annular clamping platform On the upper end face of the outer edge of the first limiting ring; on the outer side of the upper part of the base pipe, a second annular mounting groove is arranged, and a second limiting ring is clamped in the second annular mounting groove, and the lower end of the upper sealing cylinder is seated on On the upper end face of the outer edge of the second limiting ring.

The above-mentioned outer protective tube upper mounting groove is provided on the lower outer side of the upper snap ring, and a block mounting groove is provided on the upper inner side of the lower snap ring, and a block is installed in the block mounting groove, and a block is installed on the inner wall of the block mounting groove. There is a lower mounting groove for the outer protective tube, the upper end and the lower end of the outer protective tube are respectively fixedly installed in the upper mounting groove of the outer protective tube and the lower mounting groove of the outer protective tube, and the outside of the base pipe between the clamping block and the upper snap ring is from the inside to the An inner protective cylinder, an inner filter screen, a support net, and an outer filter screen are fixedly installed on the outside in sequence; or/and, there are external threads or internal threads on the upper part of the coupling, and external threads or internal threads on the lower end of the base pipe.

The above-mentioned coupling and the base pipe are fixedly installed together through threads, the upper joint and the upper sealing cylinder are fixedly installed together through threads, and the upper joint and the upper sealing cylinder are fixedly installed together through fastening screws; or/and, between the upper sealing cylinder and the upper sealing cylinder A sealing ring is installed between the base pipes, a sealing ring is installed between the upper sealing cylinder and the outer cylinder, a sealing ring is installed between the lower sealing cylinder and the base pipe, and a sealing ring is installed between the lower sealing cylinder and the outer cylinder.

The utility model has a reasonable and compact structure and is easy to use. When used together, the purpose of filtering formation oil is realized. It has the characteristics of good oil filtering effect, easy disassembly and good sealing effect, which facilitates operation, improves production efficiency and reduces production cost.

Description of drawings

Accompanying drawing 1 is the partial cross-sectional structural schematic diagram of the front view of the best embodiment of the utility model.

Accompanying drawing 2 is the magnified front view semi-sectional structural schematic diagram of the upper part of the utility model.

Accompanying drawing 3 is the magnified front view partial sectional structural schematic diagram of the lower half of the utility model.

The codes in the drawings are: 1 is the coupling, 2 is the upper sealing cylinder, 3 is the outer cylinder, 4 is the base pipe, 5 is the upper joint, 6 is the lower sealing cylinder, 7 is the sealing diversion chamber, 8 is the guide Orifice, 9 is the upper snap ring, 10 is the lower cylinder, 11 is the sealing oil chamber, 12 is the flow limiting hole, 13 is the lower snap ring, 14 is the inner protection cylinder, 15 is the inner filter screen, 16 is the support net , 17 is the outer filter screen, 18 is the outer protection cylinder, 19 is the liquid flow tank, 20 is the liquid flow hole, 21 is the liquid inlet hole, 22 is the winding wire, 23 is the flow limiting cylinder, 24 is the first limit ring , 25 is an annular card platform, 26 is a second limit ring, and 27 is a fastening screw.

Detailed ways

The utility model is not limited by the following examples, and the specific implementation manner can be determined according to the technical scheme of the utility model and actual conditions.

In this utility model, for the convenience of description, the description of the relative positional relationship of each component is described according to the layout method of Fig. The relationship is determined according to the layout direction of Figure 1 of the specification.

Below in conjunction with embodiment and accompanying drawing, the utility model is further described:

As shown in accompanying drawings 1, 2, and 3, the oil production and water control device includes a coupling 1, an upper sealing cylinder 2, an outer cylinder 3 and a base pipe 4; the outer side of the upper end of the base pipe 4 and the lower inner side of the coupling 1 are fixedly installed on Together, an upper joint 5 is fixedly installed on the upper outer side of the base pipe 4, the lower inner side of the upper joint 5 and the upper outer side of the upper sealing cylinder 2 are fixedly installed together, and the lower sealing cylinder 6 is fixedly installed on the upper outer side of the base pipe 4, The lower part of the outer cylinder 3 is provided with a first annular groove, the upper end surface of the first annular groove is seated on the outer edge of the lower sealing cylinder 6, and a seal is formed between the base pipe 4, the upper sealing cylinder 2, the outer cylinder 3 and the lower sealing cylinder 6. The diversion chamber 7 has at least one diversion hole 8 connected to the sealed diversion chamber 7 on the base pipe 4; an upper snap ring 9 is fixedly connected to the outside of the middle part of the base pipe 4, and is integrally fixed at the lower end of the lower sealing cylinder 6 There is a lower cylinder 10 with an inner diameter greater than the inner diameter of the lower sealing cylinder 6. A second annular groove is arranged on the inner side of the lower part of the lower cylinder 10. The upper end surface of the second annular groove is seated on the outer edge of the upper snap ring 9. The base pipe 4, A sealing oil cavity 11 is formed between the lower sealing cylinder 6, the lower cylinder body 10 and the upper snap ring 9, and there is at least one flow-restricting hole 12 communicating with the sealing guide cavity 7 and the sealing oil cavity 11 on the lower sealing cylinder 6; The lower part of the base pipe 4 is fixedly connected with a lower snap ring 13, and the outer side of the base pipe 4 between the upper snap ring 9 and the lower snap ring 13 is fixedly installed with an inner protective tube 14, an inner filter screen 15, a support The net 16, the outer filter screen 17 and the outer protective cylinder 18 are provided with at least two liquid flow grooves 19 axially on the outside of the inner protective cylinder 14, and there are liquid flow grooves 19 on the upper snap ring 9 axially. Corresponding to the liquid flow holes 20 , the liquid flow holes 20 communicate with the liquid flow groove 19 and the sealed oil chamber 11 respectively, and the liquid inlet holes 21 are distributed on the outer protection cylinder 18 . Like this, inner layer filter screen 15, support net 16 and outer layer filter screen 17 are convenient to filter formation oil, and filter effect is better; And the effect of outer filter screen 17.

According to actual needs, the above oil recovery and water control device can be further optimized or/and improved:

As shown in accompanying drawings 1 and 3 , a winding wire 22 is wound around the outer side of the inner protection tube 14 . In this way, the winding wire 22 facilitates better filtering of formation oil.

As shown in Figures 1 and 2, the flow limiting hole 12 is a stepped hole with a large inner diameter at the upper part and a smaller inner diameter at the lower part, and a flow limiting cylinder 23 is fixedly installed on the upper part of the flow limiting hole 12 . The flow-limiting cylinder 23 is a tungsten carbide flow-limiting cylinder, so that it is used for limiting the flow of oil to prevent bottom water from coning.

As shown in Figures 1 and 2, a first annular installation groove is provided on the outer side of the upper part of the base pipe 4, and a first stop ring 24 is clamped in the first annular installation groove, and is integrally fixed on the upper inner side of the upper joint 5. There is an annular clamping platform 25, and the lower end seat of the annular clamping platform 25 is on the upper end surface of the outer edge of the first spacer ring 24; a second annular mounting groove is arranged on the outer side of the upper part of the base pipe 4, and a second annular mounting groove is clamped in the second annular mounting groove. A second limiting ring 26 is installed, and the lower end of the upper sealing cylinder 2 is seated on the upper end surface of the outer edge of the second limiting ring 26 . In this way, the installation and disassembly of the upper joint 5 and the upper sealing cylinder 2 are facilitated.

As shown in accompanying drawing 1, 2, 3, be provided with the mounting groove on the outer protection cylinder on the outside of the bottom of upper snap ring 9, be provided with the block mounting groove in the upper inner side of lower snap ring 13, be installed in the block mounting groove The clamp block 27 is provided with the lower mounting groove of the outer protection tube on the inner wall of the clamp mounting groove, and the upper end and the lower end of the outer protection tube 18 are respectively fixedly installed in the mounting groove on the outer protection tube and in the lower mounting groove of the outer protection tube. The outer side of the base pipe 4 between the block 27 and the upper snap ring 9 is fixedly installed with an inner protective cylinder 14, an inner filter screen 15, a support net 16, and an outer layer filter screen 17 from the inside to the outside; or/and, in the coupling The upper part of 1 has external thread or internal thread, and the lower end of base pipe 4 has external thread or internal thread. In this way, it is convenient to fix and install the inner protection cylinder 14, the inner layer filter screen 15, the support net 16, the outer layer filter screen 17 and the outer protection cylinder 18 together to prevent the inner protection cylinder 14, the inner layer filter screen 15, the support The net 16, the outer filter screen 17 and the outer protection cylinder 18 are deformed.

As shown in Figures 1, 2, and 3, the coupling 1 and the base pipe 4 are fixedly installed together through threads, the upper joint 5 and the upper sealing cylinder 2 are fixedly installed together through threads, and the upper joint 5 and the upper sealing cylinder 2 are fixed through a tight Fixing screws 27 are fixedly installed together; or/and, a sealing ring is installed between the upper sealing cylinder 2 and the base pipe 4, a sealing ring is installed between the upper sealing cylinder 2 and the outer cylinder 3, and a sealing ring is installed between the lower sealing cylinder 6 and the base pipe 4. A sealing ring is installed between the tubes 4, and a sealing ring is installed between the lower sealing cylinder 6 and the outer cylinder 3. In this way, it is convenient to install and disassemble through threads and fastening screws 27; the sealing effect is better through the sealing ring.

The above technical features constitute the best embodiment of the utility model, which has strong adaptability and best implementation effect, and non-essential technical features can be increased or decreased according to actual needs to meet the needs of different situations.

The use process of the best embodiment of the utility model: when used on site, several utility models are connected in series according to the corresponding parameters of the stratum on site, and then connected in series with other oil production strings into the well, down to the design level; During oil production, the oil in the formation enters through the liquid inlet hole 21 on the outer protection cylinder 18, and after being filtered by the outer filter screen 17, the support net 16, the inner layer filter screen 15 and the winding wire 22, it passes through the inner protection cylinder 14 The upper liquid flow groove 19 flows through the liquid flow hole 20 , the sealed oil cavity 11 , the flow restriction hole 12 , the sealed flow guide cavity 7 and the flow guide hole 8 into the cavity of the base pipe 4 in sequence.

Claims (10)

1. an oil recovery water control device, is characterized in that comprising box cupling, upper seal bore, urceolus and base tube; Be fixedly installed togather with the lower inside of box cupling outside the upper end of base tube, top connection is installed with in the upper outside of base tube, the lower inside of top connection and the upper outside of upper seal bore are fixedly installed togather, lower seal cylinder is installed with in the upper outside of base tube, the bottom of urceolus is provided with the first annular groove, the upper surface seat of the first annular groove is in the outer rim of lower seal cylinder, base tube, upper seal bore, between urceolus and lower seal cylinder, form sealing diversion cavity, base tube has at least one and seals the pod apertures that is connected of diversion cavity; Snap ring is fixedly connected with outside the middle part of base tube, the lower shell that internal diameter is greater than lower seal cylinder internal diameter is integrally fixed with in the lower end of lower seal cylinder, the lower inside of lower shell is provided with the second annular groove, the upper surface seat of the second annular groove is in the outer rim of upper snap ring, base tube, lower seal cylinder, between lower shell and upper snap ring, form seal oil chamber, lower seal cylinder has the metering hole that at least one is connected with seal oil chamber with sealing diversion cavity; Lower snap ring is fixedly connected with in the bottom of base tube; interior protection cylinder, inner filter screen, supporting network, outer filter and outer protection cylinder is installed with from inside to outside successively outside base tube between upper snap ring and lower snap ring; the spout of at least two is provided with vertically in the outside of interior protection cylinder; upper snap ring there is the liquid flow hole corresponding with spout vertically; liquid flow hole is connected with seal oil chamber with spout respectively, protects outside on cylinder and is distributed with inlet opening.

2. oil recovery water control device according to claim 1, is characterized in that the outer felt of interior protection cylinder is wound with wrapping wire.

3. oil recovery water control device according to claim 1 and 2, is characterized in that metering hole is the stepped hole that the large lower inner diameter of upper inner diameter is little, at the top of metering hole fixed installation current limiting cylinder.

4. oil recovery water control device according to claim 1 and 2, it is characterized in that the upper outside of base tube is provided with the first annular mounting groove, the first spacing ring is installed with in the first annular mounting groove, integrally be fixed with annular chuck in the upper inner of top connection, the lower end seat of annular chuck is on the outer rim upper surface of the first spacing ring; The upper outside of base tube is provided with the second annular mounting groove, is installed with the second spacing ring in the second annular mounting groove, the lower end seat of upper seal bore is on the outer rim upper surface of the second spacing ring.

5. oil recovery water control device according to claim 3, it is characterized in that the upper outside of base tube is provided with the first annular mounting groove, the first spacing ring is installed with in the first annular mounting groove, integrally be fixed with annular chuck in the upper inner of top connection, the lower end seat of annular chuck is on the outer rim upper surface of the first spacing ring; The upper outside of base tube is provided with the second annular mounting groove, is installed with the second spacing ring in the second annular mounting groove, the lower end seat of upper seal bore is on the outer rim upper surface of the second spacing ring.

6. oil recovery water control device according to claim 1 and 2, it is characterized in that the lower outside of snap ring is provided with mounting groove on outer protection cylinder, the upper inner of lower snap ring is provided with fixture block mounting groove, in fixture block mounting groove, fixture block is installed, the inwall of fixture block mounting groove is provided with mounting groove under outer protection cylinder, the top and bottom of outer protection cylinder fixedly mount respectively protects mounting groove on cylinder interior with in mounting groove under outer protection cylinder outside, interior protection cylinder is installed with from inside to outside successively outside base tube between fixture block and upper snap ring, inner filter screen, supporting network, outer filter, or/and, there are external screw thread or internal thread on the top of box cupling, have external screw thread or internal thread in the lower end of base tube.

7. oil recovery water control device according to claim 3, it is characterized in that the lower outside of snap ring is provided with mounting groove on outer protection cylinder, the upper inner of lower snap ring is provided with fixture block mounting groove, in fixture block mounting groove, fixture block is installed, the inwall of fixture block mounting groove is provided with mounting groove under outer protection cylinder, the top and bottom of outer protection cylinder fixedly mount respectively protects mounting groove on cylinder interior with in mounting groove under outer protection cylinder outside, interior protection cylinder is installed with from inside to outside successively outside base tube between fixture block and upper snap ring, inner filter screen, supporting network, outer filter, or/and, there are external screw thread or internal thread on the top of box cupling, have external screw thread or internal thread in the lower end of base tube.

8. oil recovery water control device according to claim 5, it is characterized in that the lower outside of snap ring is provided with mounting groove on outer protection cylinder, the upper inner of lower snap ring is provided with fixture block mounting groove, in fixture block mounting groove, fixture block is installed, the inwall of fixture block mounting groove is provided with mounting groove under outer protection cylinder, the top and bottom of outer protection cylinder fixedly mount respectively protects mounting groove on cylinder interior with in mounting groove under outer protection cylinder outside, interior protection cylinder is installed with from inside to outside successively outside base tube between fixture block and upper snap ring, inner filter screen, supporting network, outer filter, or/and, there are external screw thread or internal thread on the top of box cupling, have external screw thread or internal thread in the lower end of base tube.

9. oil recovery water control device according to claim 1 and 2, it is characterized in that box cupling and base tube are fixedly installed togather by screw thread, top connection and upper seal bore are fixedly installed togather by screw thread, and top connection and upper seal bore are fixedly installed togather by trip bolt; Or/and, between upper seal bore and base tube, sealing ring is installed, between upper seal bore and urceolus, sealing ring is installed, between lower seal cylinder and base tube, sealing ring is installed, lower seal cylinder and and urceolus between sealing ring is installed.

10. oil recovery water control device according to claim 8, it is characterized in that box cupling and base tube are fixedly installed togather by screw thread, top connection and upper seal bore are fixedly installed togather by screw thread, and top connection and upper seal bore are fixedly installed togather by trip bolt; Or/and, between upper seal bore and base tube, sealing ring is installed, between upper seal bore and urceolus, sealing ring is installed, between lower seal cylinder and base tube, sealing ring is installed, lower seal cylinder and and urceolus between sealing ring is installed.