CN217176578U - Anti-blocking sand prevention device for petroleum production engineering - Google Patents

Abstract

The utility model discloses a prevent sand control device for oil recovery engineering of jam, include: casing support fixed mounting be in outer sheathed tube upper and lower both ends department, just wall of a well support fixed connection still includes in casing support below: the wire-wound sieve tube is connected inside the outer sleeve in a nested mode, a gravel layer is filled between the wire-wound sieve tube and the outer sleeve, the inner-layer sieve tube is installed on the inner side of the wire-wound sieve tube in a nested mode, an inner-layer oil tube is arranged inside the inner-layer sieve tube in a nested mode, and the top end of the inner-layer oil tube is communicated with and provided with an oil pumping tube. This prevent sand control device for oil recovery engineering of jam can strengthen sand control device's filtration progression to effective filtration clears away the stratum sand in the oil, and can set up on the outer sleeve pipe and cross the filtration pore and enlarge the oil feed area, and can form the prescreening protection to the gravel layer, thereby reduce the grit and to the wearing and tearing damage of gravel layer, effectively promoted sand control device's practicality.

Description

Anti-blocking sand prevention device for petroleum production engineering

Technical Field

The utility model relates to an oil recovery technical field specifically is a prevent sand control device for oil recovery engineering of jam.

Background

The sand production of the oil well is one of the important problems encountered in the oil exploitation process, the sand production of the oil well is mainly harmful to seriously corroding ground and underground equipment, increasing the maintenance workload of sand blocking, sand washing and pump checking, ground tank cleaning and the like, stopping production of the oil well due to sand-buried oil layers or shaft sand blocking, and causing the collapse of a well wall or an oil layer when the sand production is serious, so that the danger of casing damage or oil well abandonment is caused, and the sand prevention can effectively reduce the cost of the oil exploitation and the exploitation difficulty.

Present oil development machinery sand control mode, it packs the gravel with the mechanical sleeve pipe and carries out the sand control and filter mainly to adopt the wire-wound screen pipe that constitutes by spiral welding inside and outside, but the intensity of sieving of present wire-wound screen pipe is limited, and then can't high-efficiently filter the stratum sand in the oil, and then cause corrosion damage to inner oil pipe, and the space that current sand control device extracted oil from the sleeve pipe bottom is limited, and cause the oil velocity of flow to slow down easily and cause the jam, the in-process of extracting oil simultaneously, stratum sand direct contact gravel layer and the continuous wearing and tearing in the oil easily cause the gravel coarse, and then lead to the oil flow more slowly, thereby oil development efficiency has been reduced, still be unfavorable for promoting the life on gravel layer simultaneously, to the problem, the urgent need is to carry out the innovative design on original oil recovery sand control device's basis.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent sand control device for oil recovery engineering of jam to propose current oil recovery sand control device in solving above-mentioned background art, it is limited to filter the stratum sand effect in the oil, and cause wearing and tearing to the gravel filter layer easily, thereby influence the velocity of flow of oil recovery, be unfavorable for promoting the problem of sand control device's practicality.

In order to achieve the above object, the utility model provides a following technical scheme: an anti-clogging sand control device for petroleum production engineering, comprising:

the casing support is fixedly arranged at the upper end and the lower end of the outer casing, and the well wall support is fixedly connected below the casing support;

further comprising:

the wire-wound sieve tube is connected to the inside of the outer sleeve in a nested manner, and a gravel layer is filled between the wire-wound sieve tube and the outer sleeve;

the inner-layer screen pipe is nested and installed on the inner side of the wire-wound screen pipe, an inner-layer oil pipe is nested and arranged in the inner portion of the inner-layer screen pipe, and the top end of the inner-layer oil pipe is communicated with and provided with an oil pumping pipe.

The setting up of above-mentioned structure makes the filtration sand control structure of device more inseparable, can sieve layer upon layer to the oil of extraction to effectively clear away the stratum sand in the filtration oil, can also stably keep sand control device in the petroleum downhole safety in utilization, when enlarging the entry area that the oil got into the cover pipe, can also the grit in the preliminary separation oil, thereby reduce the wearing and tearing to the gravel layer, so that high-efficient hoisting device's life and efficiency.

Preferably, evenly distributed has seted up the hole form fretwork groove on outer sheathed tube outer wall, and still fixed mounting has the leak protection sill on outer sheathed tube bottom medial surface to the bottom of leak protection sill and wire-wound screen pipe constitutes closed structure, the setting up of above-mentioned structure makes outer sleeve pipe can enlarge the oil feed area through the hole groove that evenly distributed seted up, thereby avoids the oil velocity of flow to reduce and the jam problem that produces, can also protect the gravel layer of inlayer packing, damage to the friction of gravel layer with grit in the reduction oil.

Preferably, the inside and outside intercommunication structure is constituteed with outer sleeve pipe to the wire-wrapped screen pipe, and the wire-wrapped screen pipe constitutes by the clad structure with the gravel layer to it is provided with screen cloth support still to block on the inboard bottom surface of wire-wrapped screen pipe, and the setting up of above-mentioned structure makes oil when getting into the sleeve pipe inside, needs pass through the filtration of gravel layer and wire-wrapped screen pipe in advance, thereby has effectively clear away most stratum sand material in the oil, and can effectively promote the safety in utilization and the steadiness of wire-wrapped screen pipe, and then has promoted the quality of utilization of device.

Preferably, the screen support and the inner screen pipe form an integrated structure, metal filter screens are uniformly distributed on the surface of the inner screen pipe, the inner screen pipe and the wire-wound screen pipe form an internal and external communicating structure, the structure enables the inner screen pipe to keep a more stable installation structure through the screen support, and the sand prevention and filtration effect of petroleum can be enhanced through the inner screen pipe.

Preferably, the inner oil pipe and the inner screen pipe form an inner and outer communicating structure, the top end of the inner oil pipe is fixedly connected with the bottom end of the oil pumping pipe, the oil pumping pipe is fixedly connected with the outer casing pipe, the structure enables oil to effectively remove an internal sand structure through multi-stage filtration in the process of mining and pumping, and further the strong mobility of the oil is kept to avoid the blockage of the internal casing pipe of the sand control device.

Compared with the prior art, the beneficial effects of the utility model are that: this prevent sand control device for oil recovery engineering of jam can form more firm multistage filtration to fully clear away the stratum sand material in the oil, in order to keep the smoothness nature of oil development, and can effectively promote sand control device's quality of use, reduce the wearing and tearing that produce the device in the oil development, its concrete content is as follows:

1. according to the anti-blocking sand prevention device for the petroleum extraction engineering, the structure of the wire-wound screen pipe and the gravel layer is arranged in the outer sleeve, the hollow hole groove structures are uniformly distributed on the surface of the outer sleeve, so that the area of petroleum entering the sleeve is enlarged, large gravel impurities in the petroleum can be primarily separated, the abrasion damage to the inner gravel layer can be reduced, and the principle that most of the gravel impurities in the petroleum are fully filtered and removed by using the wire-wound screen pipe and the gravel layer is utilized, so that the purposes that the use quality of the sand prevention device can be conveniently and effectively improved, and the abrasion damage problem of the gravel layer can be effectively reduced are achieved;

2. the anti-blocking sand prevention device for the petroleum extraction engineering has the advantages that the structure of the screen mesh support, the inner screen mesh pipe, the inner oil pipe and the oil pumping pipe is arranged inside the wire-wound screen pipe, the inner screen mesh pipe is stably supported through the screen mesh support, and the principle that residual impurities in petroleum are fully removed by the inner screen mesh pipe nested in the wire-wound screen pipe is utilized, so that the device can keep the petroleum to flow into the inner oil pipe more smoothly, and the sand prevention quality of the petroleum can be improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the three-dimensional structure of the outer casing of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the inner screen pipe of the present invention;

FIG. 4 is a schematic perspective view of a gravel layer according to the present invention;

FIG. 5 is a schematic view of the three-dimensional structure of the inner-layer oil pipe of the present invention;

fig. 6 is a schematic view of the three-dimensional structure of the casing support of the present invention.

In the figure: 1. an outer casing; 2. a cannula holder; 3. a well wall bracket; 4. a leak-proof bottom platform; 5. a wire-wrapped screen pipe; 6. a gravel layer; 7. a screen support; 8. inner screen pipe; 9. an inner layer oil pipe; 10. and (4) an oil pumping pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: an anti-clogging sand control device for petroleum production engineering, comprising: the casing support 2 is fixedly arranged at the upper end and the lower end of the outer casing 1, and the well wall support 3 is fixedly connected below the casing support 2;

further comprising: the wire-wound sieve tube 5 is connected inside the outer casing 1 in a nested manner, a gravel layer 6 is filled between the wire-wound sieve tube 5 and the outer casing 1, the inner-layer sieve tube 8 is mounted inside the wire-wound sieve tube 5 in a nested manner, an inner-layer oil tube 9 is mounted inside the inner-layer sieve tube 8 in a nested manner, and an oil pumping tube 10 is communicated and mounted at the top end of the inner-layer oil tube 9;

when using the device, at first with outer sleeve pipe 1 through the support of sleeve pipe support 2 and wall of a well support 3 and stably erect in the oil well, thereby stably keep sand control sheathed tube stationarity when exploiting oil, later when exploiting oil, the oil that carries a large amount of stratum sand material gets into from the fretwork circular slot that outer sleeve pipe 1 surface was seted up, contact the gravel layer 6 of packing at wire-wrapping screen pipe 5 skin afterwards, filter through gravel layer 6 and screen and remove grit impurity, after the rescreening of wire-wrapping screen pipe 5 is passed through to oil, the circulation gets into in the inner screen pipe 8, and flow in inner oil pipe 9 after rescreening, thereby effectively clear away the oil and contain sand impurity.

When the oil sand control treatment is carried out, specifically, according to the graph shown in fig. 2 and fig. 6, circular hole-shaped hollow grooves are uniformly distributed and formed in the outer wall of the outer casing 1, the inner side surface of the bottom end of the outer casing 1 is also fixedly provided with the leakage-proof bottom table 4, and the leakage-proof bottom table 4 and the bottom end of the wire-wound screen pipe 5 form a closed structure, so that oil is firstly pumped into the pipeline from the hole grooves formed in the surface of the outer casing 1, the oil feeding area is enlarged, and meanwhile, the connection tightness between the outer casing 1 and the wire-wound screen pipe 5 is also improved, so that the filtering and purifying quality of the sand control device is maintained;

after the petroleum is pumped into the outer casing 1, specifically, as shown in fig. 1, 3 and 5, an inner and outer communicating structure is formed by the wire-wrapped screen pipe 5 and the outer casing 1, the wire-wrapped screen pipe 5 and the gravel layer 6 form a coated structure, and the screen support 7 is clamped and arranged on the inner bottom surface of the wire-wrapped screen pipe 5, so that the sand and stone impurities in the petroleum can be prevented from directly contacting the gravel layer 6 by using the shunting and isolation of the outer casing 1, the problem of rough abrasion of the gravel layer 6 is reduced, the flowing smoothness of the petroleum is convenient to maintain, and then the petroleum is screened through the wire-wrapped screen pipe 5 again after being screened through the gravel layer 6, and most of the impurities in the petroleum are filtered and removed;

the petroleum for removing the excessive impurities continuously flows to the inside of the casing, specifically, as shown in fig. 1, 3 and 4, the screen support 7 and the inner screen pipe 8 form an integrated structure, the surface of the inner screen pipe 8 is uniformly distributed with metal screen sheets, and the inner screen pipe 8 and the wire-wrapped screen pipe 5 form an internal and external communicating structure, as can be seen from the description, the petroleum at this time enters the inner screen pipe 8, the inner screen pipe 8 is stably supported by the screen support 7 under the impact of the petroleum flowing at high speed, so as to improve the use quality of the device, and simultaneously the inner screen pipe 8 is utilized to further filter a small amount of sand and stone impurities remained in the petroleum, finally, after the petroleum is subjected to multi-stage filtering separation, the petroleum after sand production enters the inner oil pipe 9, the inner oil pipe 9 and the inner screen pipe 8 form an internal and external communicating structure, and the top end of the inner oil pipe 9 is fixedly connected with the bottom end of the oil pumping pipe 10, and the oil pumping pipe 10 is fixedly connected with the outer casing 1, and the oil at the moment flows and enters along the hole grooves formed in the surface of the inner oil pipe 9 again, so that the oil is conveniently shunted, the flow area is enlarged, and the smoothness and stability of the device in oil exploitation are improved.

The working principle is as follows: when the device is used, as shown in figures 1-6, the device is vertically placed under an oil well, the stability of the outer casing 1 is kept through the stable support of the casing support 2 and the well wall support 3, then when oil is extracted, the area of an oil flowing inlet is enlarged through the hollow hole grooves formed in the surface of the outer casing 1, the oil is shunted to reduce the direct contact of sand and stone impurities in the oil with the inner gravel layer 6, so that the friction and the abrasion on the gravel layer 6 are reduced, the flowing fluency of the oil is improved, then after the oil is sieved by the gravel layer 6 and the wire-wound sieve tube 5, most of sand prevention impurities in the oil are removed, then the residual impurities in the oil are filtered and removed by the inner layer sieve tube 8 again, the oil is better in quality, finally the oil shunts and flows into the inner layer oil tube 9 and flows into the oil extracting tube 10 along the inner layer oil tube 9 in a concentrated mode, therefore, the anti-blocking sand control device for the petroleum extraction engineering can stably flow out of the oil extraction well, and the working principle is the working principle of the anti-blocking sand control device for the petroleum extraction engineering.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a prevent sand control device for oil recovery engineering of jam, sand control device mainly comprises outer sleeve pipe, sleeve pipe support and wall of a well support, its characterized in that includes: the casing support is fixedly arranged at the upper end and the lower end of the outer casing, and the well wall support is fixedly connected below the casing support;

further comprising:

the wire-wound sieve tube is connected to the inside of the outer sleeve in a nested manner, and a gravel layer is filled between the wire-wound sieve tube and the outer sleeve;

the inner-layer screen pipe is nested and installed on the inner side of the wire-wound screen pipe, an inner-layer oil pipe is nested and arranged in the inner portion of the inner-layer screen pipe, and the top end of the inner-layer oil pipe is communicated with and provided with an oil pumping pipe.

2. The anti-clogging sand control device for petroleum extraction engineering according to claim 1, characterized in that: the outer wall of the outer sleeve is uniformly provided with round hole-shaped hollow grooves, the inner side face of the bottom end of the outer sleeve is fixedly provided with a leakage-proof bottom platform, and the leakage-proof bottom platform and the bottom end of the wire-wound sieve tube form a closed structure.

3. The anti-clogging sand control device for petroleum extraction engineering according to claim 1, characterized in that: the wire-wrapped screen pipe and the outer sleeve form an inner-outer communicating structure, the wire-wrapped screen pipe and the gravel layer form a coated structure, and the screen support is further arranged on the bottom surface of the inner side of the wire-wrapped screen pipe in a clamping mode.

4. The anti-clogging sand control device for petroleum extraction engineering according to claim 3, characterized in that: the screen support and the inner screen pipe form an integrated structure, metal filter screens are uniformly distributed on the surface of the inner screen pipe, and the inner screen pipe and the wire-wound screen pipe form an internal and external communicating structure.

5. The anti-clogging sand control device for petroleum extraction engineering according to claim 1, characterized in that: the inner oil pipe and the inner screen pipe form an inner-outer communicating structure, the top end of the inner oil pipe is fixedly connected with the bottom end of the oil pumping pipe, and the oil pumping pipe is fixedly connected with the outer casing pipe.

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