33 results about "Production packer" patented technology

A completion system for CO2 storage monitoring includes a first well tubular metal structure, a second well tubular metal structure, cement arranged between the borehole and a second part of the second well tubular metal structure, a monitoring line extending along the second well tubular metal structure and into the cement, a production packer assembly providing a seal between the first and second well tubular metal structures, the production packer assembly having an anchoring unit, and an annular barrier unit. Each unit comprises a tubular metal part configured to be mounted as part of a first part of the second well tubular metal structure, the tubular metal part having an expandable metal sleeve having a circumferential groove with an anchoring element and a sealing element. The monitoring line extends through the anchoring and annular barrier units between the tubular metal part and the expandable metal sleeve.

The utility model discloses a thermal recovery packer capable of being fished and unsealed, which comprises a central pipe, a releasing assembly used for driving setting of the packer, a fishing assembly used for fishing and unsealing of the packer, a rubber sleeve assembly used for sealing an annular space between the packer and a casing pipe and a slip assembly used for clamping and fixing the packer in the casing pipe are sequentially arranged on the outer wall of the central pipe from top to bottom, and the rubber sleeve assembly comprises a liner pipe and a rubber sleeve base. The upper end of the rubber sleeve seat is inserted into the outer tube, a starting shear pin is arranged between the outer tube and the rubber sleeve seat, a liner tube lock spring ring groove is formed in the inner wall of the liner tube, and a liner tube lock spring is arranged in the liner tube lock spring ring groove; the slip assembly comprises an upper cone, a setting shear pin is arranged between the upper cone and the liner tube, an upper cone lock spring ring groove is formed in the inner wall of the upper cone, and an upper cone lock spring is arranged in the upper cone lock spring ring groove. The thermal recovery packer is high in slip anchoring force, large in setting pressure difference, capable of meeting the use requirement of heavy oil thermal recovery under the high-temperature and high-pressure environment, and good in setting effect.

An oil pipe is arranged in a casing pipe, a production packer and a top packer are arranged in an annular space between the oil pipe and the casing pipe from top to bottom, the lower end of the oil pipe penetrates through the top packer and extends into a sand prevention section of the gas well, and the oil pipe punches holes in the upper portion of the production packer; an upper rubber sleeve and a lower rubber sleeve of the suspended overflowing packer are respectively arranged on the upper side and the lower side of the punching position of the oil pipe in a setting manner, and the suspended overflowing packer is used for suspending a speed pipe; a check valve is arranged between the lower rubber sleeve and the packer body, allows annular fluid between an oil pipe and a speed pipe to flow downwards and prevents fluid produced by a stratum from flowing upwards, and a gas injection channel entering the annular space of the oil pipe and the speed pipe from the annular space of the oil pipe and a sleeve is established; and a liquid drainage and gas production channel is established between the oil pipe at the upper part of the suspended overflowing packer and the speed pipe at the lower part of the suspended overflowing packer. The production capacity of the liquid-accumulating gas well can be recovered, continuous, stable and efficient liquid drainage and gas recovery are achieved, and the recovery efficiency of the gas well is improved.

The invention discloses an offshore deep continuous foam liquid drainage gas production process pipe column and an operation method, the pipe column comprises a production sleeve, an oil pipe, a lower suspension packer, an upper suspension packer and a continuous oil pipe, a production packer and a top packer are sequentially arranged between the oil pipe and the production sleeve from top to bottom, the oil pipe is located above the production packer for punching, and the continuous oil pipe is located above the production packer for drilling. The lower suspension packer is arranged below the punching position, the upper suspension packer is arranged above the punching position, the upper suspension packer is connected with the lower suspension packer in a sealed mode through an inserting head, and the lower portion of the lower suspension packer is connected with the coiled tubing. A foam scrubbing agent channel from an oil pipe and sleeve annulus to an oil pipe and continuous oil pipe annulus is established through cooperation of multiple tools, the foam scrubbing agent is introduced into a deep shaft liquid accumulation well section below a production packer and above a production layer from the oil pipe and production sleeve annulus, and the fluid density of a shaft is reduced; the mixed fluid is discharged from the continuous oil pipe and the upper oil pipe, and continuous and stable discharging and mining of the gas well are achieved.

The utility model relates to the technical field of packers, and discloses a novel oil drilling and production packer which comprises a control block, a plurality of sliding blocks are connected in the control block in a sliding mode, first sliding columns are fixedly connected to the two sides of the sliding blocks, extrusion blocks are fixedly connected to the exteriors of the first sliding columns, and the extrusion blocks are fixedly connected to the exteriors of the second sliding columns. And the exteriors of the multiple sliding blocks are rotationally connected with transmission rods, the exteriors of the multiple transmission rods are rotationally connected with rack plates, the front end of the control block is fixedly connected with a rubber barrel, a driving assembly used for driving is arranged in the control block, and a tubular column is slidably connected in the control block. According to the utility model, the rubber sleeve can be quickly controlled, and the state of the rubber sleeve can be timely and accurately adjusted according to different working condition requirements such as layered mining and water injection operation in petroleum drilling and production operation, so that the best packing effect is achieved, and the smooth development of various underground operations is guaranteed.

The invention discloses an anti-airlock fracturing production integrated tubular column of a throwing and fishing electric pump and an operation method. The device comprises an outer sleeve; the tie-back barrel, the drilling liner hanger and the lower inner sleeve are sequentially connected from top to bottom; a differential pressure sliding sleeve is arranged at the toe end of the lower inner sleeve; the upper inner casing pipe is sequentially provided with a large-drift-diameter hydraulic control sliding sleeve, a deep well large-drift-diameter subsurface safety valve, a large-drift-diameter hydraulic control stratum isolation valve, a tie-back casing pipe anchor and an insertion seal from top to bottom. A plurality of bridge plugs are pumped into the lower inner casing pipe in batches through the upper inner casing pipe and used for conducting clustering perforation fracturing operation; the electric pump pipe column is sequentially provided with a composite pipe cable, a production packer and an electric pump unit from top to bottom; the electric pump pipe column is arranged in the inner upper casing pipe through the composite pipe cable, and the production packer is located above the large-drift-diameter hydraulic control sliding sleeve. The device has the beneficial effects that multi-layer-section separate layer fracturing of one pipe column can be achieved, after fracturing, the pipe column is immovable, manual lifting is rapidly conducted, and the phenomenon that a well killing fluid pollutes a reservoir is prevented.

The present invention discloses an integrated system for heavy oil injection and production by using a small oil pipe to launch and salvage an electric pump, comprising an outer heat injection string and an inner production string, wherein the production string comprises a small oil pipe, an electric submersible pump connector, and an inverted electric submersible pump from top to bottom, and the electric submersible pump connector is provided with a second guide flow hole. The present application involves less ground operation equipment, high operation efficiency, and saves operation resources and costs; a small oil pipe is selected as the output fluid output channel to avoid fluid immersion and scouring in the annulus between the inner production string and the outer heat injection string, thereby protecting the thermal insulation performance of the insulated oil pipe and the insulation performance of the cable, and reducing the risk of failure; the electric submersible pump unit adopts an inverted pump design, and the cable is directly connected to the electric submersible pump motor after passing through the upper production packer, reducing the risk of cable crushing and improving the operating stability of the electric submersible pump in highly deviated wells; the small oil pipe has a strong launching and salvaging capability, and can realize launching and salvaging of the electric submersible pump in highly deviated wells and horizontal wells.

In the process of suspending a subsea hydrocarbon well (1) after finalizing the completion operation and prior to stimulation of the well and putting the well on production, preinstalled upper and lower glass plugs (11, 12) are used as temporary barriers in the tubing. The plugs allow various tests to be performed before the lower plug (12), below the production packer (10), is broken; the upper plug (11) located above the downhole safety valve (13) then forms one of the barriers required to suspend the well whilst the Blow Out Preventer (BOP) is removed and Xmas tree installed, at which point the upper plug (11) is broken.

The invention belongs to the technical field of heavy oil thermal recovery, and discloses a packer suitable for heavy oil thermal recovery, a nitrogen composite heat insulation pipe column and an implementation process. The packer and nitrogen composite heat insulation pipe column comprises a constant pressure valve, a thermal recovery packer, a check valve, a compensator and a heat insulation oil pipe. In order to solve the problems of limitation of a thermal insulation technology of an existing thickened oil thermal production well, limited thermal insulation effect of a packer and the like, thermal insulation of the packer is combined with a nitrogen thermal insulation technology, a tubular column structure utilizing the thermal production packer, a check valve, a constant pressure valve and a thermal insulation oil pipe is designed, and a continuous and efficient thermal insulation process method is formed by matching with nitrogen injection. Longer-time intermittent injection of nitrogen can be achieved, the steam injection heat insulation effect is effectively improved, and meanwhile the nitrogen consumption can be reduced.

The invention discloses a pipe column structure for automatically injecting gas from a high-pressure layer to a low-pressure layer and a control method. The technical problems that well completion operation is high in cost, large in process difficulty and the like are solved. The tubular column structure comprises a shaft sleeve, an isolation assembly, a filtering assembly and a gas injection assembly, and the gas injection assembly comprises a gas injection production tubular column arranged in the shaft sleeve; the production packer is arranged on the gas injection production pipe column and is fixed with the shaft casing pipe in a setting manner, and the production packer is positioned above the formation low-pressure layer; the injection allocation valve is arranged on the gas injection production pipe column and located below the production packer, and the injection allocation valve is located at the position of a low-pressure layer of the stratum; and the sealing part is connected to the bottom of the gas injection production tubular column and is in sealing connection with the isolation assembly. Natural energy of a high-pressure layer gas group of the same well can automatically flow to a low-pressure layer gas group, the recovery efficiency of the low-pressure layer gas group is improved, meanwhile, the cost can be saved, the well completion process difficulty is reduced, and layered mining can be conducted on an oil well in the later period.

The invention relates to the technical field of in-well injection and production equipment, in particular to a two-stage sealing injection and production packer which comprises an injection and production part, and a first sealing part, an anchoring part, a second sealing part and a blocking part which are sequentially arranged on the periphery of the injection and production part in a sliding and sleeving mode. The first sealing part can slidably extrude the upper sealing rubber barrel; the second sealing part can slidably extrude the lower sealing rubber barrel; one end of the anchoring part is connected with the first sealing part; one side of the blocking part is clamped with the injection-production part through a first locking ring; an unlocking bulge is arranged on the first lock ring; an unlocking groove is formed in the lock cylinder; when the unlocking protrusion is right opposite to the unlocking groove, the unlocking protrusion is embedded in the unlocking groove. Two-stage sealing arrangement is formed through the first sealing part and the second sealing part, the sealing effect is improved, the probability of sealing problems is reduced, clamping of the lock ring can be relieved by moving the lock cylinder, and therefore extrusion force is released for unsealing, the unsealing efficiency is improved, replacement and maintenance are convenient, and normal operation of the air energy storage system is prevented from being affected.

The utility model discloses a petroleum drilling and production packer, and relates to the technical field of packers. The packer comprises a packer body, a clamping assembly is arranged on the surface of the packer body, the packer further comprises a supporting rod used for supporting the clamping assembly, a locking assembly used for controlling the height of the clamping assembly is arranged on the surface of the supporting rod, the right side face of the supporting rod is fixedly connected with an aligning ring, and the aligning ring is fixedly connected with the packer body. The clamping assembly comprises a mounting box, the inner wall of the mounting box is rotationally connected with a double-thread screw, the front end of the double-thread screw penetrates through the front side wall of the mounting box, the front end of the double-thread screw is fixedly connected with a rotary knob, and the surface of the double-thread screw is in threaded connection with a connecting rod; the effect that the packer can be accurately aligned and installed conveniently is achieved in the using process, the center position of the packer can be accurately controlled, the packer can be aligned to a preformed hole in a well, and the installation process is simpler and more convenient.

A method to perform a completion operation of a wellbore is described. The method includes determining a wellbore trajectory of the wellbore penetrating a reservoir, generating a grid cell set of interest surrounding the wellbore, where the grid cell set of interest includes consecutive grid cells that are penetrated by the wellbore in the reservoir, generating, from the grid cell set of interest and using a clustering algorithm, grid cell clusters based on a grid cell position measure and a reservoir property of each grid cell, where each grid cell cluster corresponds to a flow compartment of the wellbore, and placing, during the completion operation and for each grid cell cluster, a packer at a starting position and an ending position of the corresponding flow compartment.

The application provides an energy storage injection and production packer, which comprises an inner tube, a first assembly, a second compression sleeve, a slip, a third compression sleeve and a second assembly which are sequentially sleeved on the outer wall of the inner tube and are connected at the first ends and the second ends, the third compression sleeve is sleeved at the first end of the second assembly through a second sliding groove and a second protrusion, the outer wall of the inner tube is further sleeved with a second reverse stopping part and a third reverse stopping part, the inner wall of the third compression sleeve is provided with an annular groove, a middle annular block is arranged in the annular groove, and the middle annular block is kept at a distance from the third reverse stopping part. The second compression sleeve and the third compression sleeve are driven in the inner cavity of the wellbore, the slip is simultaneously extruded from both ends, the slip is not interfered and is mutually assisted, the slip is expanded to form anchoring with the inner wall of the wellbore, the stability of the synchronous expansion deformation of the two ends of the slip is ensured, the slip is quickly released through the cutting method of the inner tube, and the operation demand of the overall quick recovery of the packer is met.

An ultrahigh-temperature multi-pipe real-time regulation and control layered and segmented injection-production and long-acting monitoring device is characterized in that a heat insulation oil pipe is arranged at the lower end of a large oil pipe hanger, and a high-temperature production packer is arranged on the heat insulation oil pipe; the heat insulation oil pipe is sequentially connected with the high-temperature jet pump outer working barrel, the high-temperature deep well safety valve, the oil pipe inside and outside penetrating short section, the open type telescopic short section and the steam injection and liquid production channel switching valve, and the steam injection and liquid production channel switching valve is concentrically connected with the first-stage independent injection and liquid production pipe column, the second-stage independent injection and liquid production pipe column and the inserted sealing inner working pipe column. The method has the beneficial effects that an ultrahigh-temperature multi-pipe injection and production switching mode is combined with a high-temperature injection and production integrated process, and the method is not limited to combination of injection and production processes such as high-temperature jet pump injection and production integration, high-temperature Y-pipe electric pump injection and production integration and high-temperature casting and fishing electric pump / screw pump injection and production integration; fine regulation, control, steam injection and liquid production and long-acting monitoring of a large-well-spacing long-well-section horizontal well and a multi-layer high-inclination directional well can be achieved, and the injection and production effect and efficient development of heavy oil thermal production are guaranteed.

The invention discloses a multi-lithologic oil and gas reservoir oil and gas simultaneous production electric control pipe column and a production method, and belongs to the technology of oil and gas production from a multi-layer oil well, a packer I, a bottom-hole regulator and a packer II are sequentially arranged in a sleeve from bottom to top, the packer I, the bottom-hole regulator and the packer II are all of tubular structures, and middle channels of the packer I, the bottom-hole regulator and the packer II are liquid flow channels; the packer I, the bottom-hole regulator and the packer II are sequentially connected through connecting pipes; middle channels of the packer I, the bottom-hole regulator and the packer II are communicated to form a liquid channel, and gas channels are arranged on walls of the packer I, the bottom-hole regulator and the packer II and are communicated with one another. By using the electric control simultaneous production packer, the electric control simultaneous production bottom-hole regulator and the electric control gas lift valve, oil-gas sub-runner production and simultaneous production of multiple lithologic reservoirs are achieved, the problem that a high-pressure gas layer affects liquid production of a low-pressure oil layer is solved, gas lift oil production of the oil layer is achieved through high-pressure gas, and the yield of the oil layer is improved.

This invention relates generally to tubing for transporting a fluid, for downhole applications, connected to a production packer and / or a downhole anchor and more particularly to tubing for transporting a fluid, connected to a coupling member, a production or injection installation, a method of placing production and / or injection tubing in a subsurface well, a method of manufacturing tubing, and a method of retrieving a subsurface fluid, such as oil or gas, from a well

A method of producing a wellbore fluid from a wellbore includes operating an electric submersible pump (ESP) system in a wellbore to propel the wellbore fluid through a tubing string in the wellbore and determining that a gas pocket of free gas in an annulus around the tubing string that is accumulating and approaching an inlet of the ESP system. The gas pocket is roofed from above by a production packer. In response to determining that the gas pocket is approaching the inlet, operation of the ESP system is interrupted and one or more vent ports defined between the annulus and an interior of the tubing string are opened to vent the free gas from the annulus to the interior of the tubing string while operation of the ESP system is interrupted.

The invention provides an energy storage injection and production packer which comprises an inner pipe, a first assembly, a second compression sleeve piece, a slip, a third compression sleeve piece and a second assembly, the first assembly, the second compression sleeve piece, the slip, the third compression sleeve piece and the second assembly are sequentially connected to the outer wall of the inner pipe in a sleeving mode, and the head ends and the tail ends of the first assembly and the second assembly are in butt joint. The outer wall of the inner pipe is further sleeved with a second non-return component and a third non-return component, an annular groove is formed in the inner wall of the third compression sleeve, a middle annular block is arranged in the annular groove, and a distance is reserved between the middle annular block and the third non-return component. The slip is extruded from the two ends at the same time by driving the second compression sleeve piece and the third compression sleeve piece in the inner cavity of the shaft, mutual interference and mutual assistance are achieved, the slip is expanded to be anchored with the inner wall of the shaft, the stability of synchronous external expansion deformation of the two ends of the slip is guaranteed, rapid unblocking of the slip is achieved through an inner pipe cutting method, and the service life of the slip is prolonged. And therefore, the operation requirement of overall rapid recovery of the packer is met.

A downhole tool includes an inner mandrel having an inner mandrel bore that extends axially-therethrough. The downhole tool also includes a first valve configured to move between a first position and a second position. The downhole tool also includes an inflatable element configured to inflate and expand radially-outward and into contact with a surrounding tubular in response to the first valve moving to the second position, which permits a fluid in the inner mandrel bore to flow into the inflatable element. The downhole tool also includes a second valve configured to vent some of the fluid within the inflatable element to an exterior of the downhole tool in response to the fluid reaching a second valve pressure threshold.

Some implementations include a packer comprising: an upper mandrel; at least one seal coupled with the upper mandrel and configured to radially expand into a casing of a wellbore; a prop configured to axially traverse, in response to hydraulic pressure, along the upper mandrel and cause the seal to radially expand; at least one shear screw configured to hold the prop stationary and in contact with the upper mandrel until sheared; and a snap ring coupled with the prop and configured to prevent axial traversal of the prop along the upper mandrel and radial expansion of the seal.

The invention discloses an oil-water separation same-well injection-production well completion structure. The technical problem that the oil-water separation effect is poor is solved. The device comprises a Christmas tree, an oil pipe assembly, an injection-production packing assembly, a cable passing packer, a bridge type assembly, an oil-water separation assembly and the like, and the oil-water separation assembly comprises an oil-water separation pipe connected to the oil pipe assembly; the oil-water separator is connected to the bottom of the oil-water separation pipe; the screw pump is connected to the bottom of the oil-water separator and used for pressurizing the oil reservoir and conveying the oil reservoir to the oil-water separator; and the power source is connected with the screw pump and provides power for the screw pump. The oil-water separation device can reduce the shearing and crushing effects on oil drops so as to reduce the emulsification degree of the oil drops, thereby improving the oil-water separation effect.

A method of extracting heat from hydrocarbon production or injection wells involves passing heat exchanger tubing (6) down an active production or injection well and securing it. Heat from the formation or from fluids in the production tubing or annulus is extracted and returned to the surface to be used in various ways on a platform, e.g. heating accommodation or water supplies. The heat exchanger tubing (6) may be delivered on coil tubing (13) into the production tubing (8) and anchored above the DHSV, in a retro-fit operation. Alternatively it may be installed in a sidetrack well (126) via a dedicated kick-off (124, 125). If installed at the completion of the well, the heat exchanger tubing (206) may be located in the annulus, mounted on the outside of the production tubing (208); in this event, the heat exchanger tubing may extend further into the well (beyond the DHSV) to, or even beyond, the production packer (231).

The invention discloses a system for realizing thick oil injection and production integration by throwing and fishing an electric pump through a small oil pipe, which comprises an outer-layer heat injection tubular column and an inner-layer production tubular column, the production tubular column comprises a small oil pipe, an electric submersible pump connector and an inverted electric submersible pump from top to bottom, and the electric submersible pump connector is provided with a second diversion through hole. Ground operation equipment involved in the method is few, the operation efficiency is high, and operation resources and cost are saved; a small oil pipe is selected as an output liquid output channel, fluid soaking and scouring in an annular space of an inner-layer production pipe column and an outer-layer heat injection pipe column are avoided, the heat insulation performance of the heat insulation oil pipe can be protected, the cable insulation performance can be protected, and the failure risk is reduced. The electric submersible pump unit adopts an inverted pump design, a cable penetrates through an upper production packer and then is directly connected with an electric submersible pump motor, the cable collapse risk is reduced, and the operation stability of an electric submersible pump in a highly-deviated well is improved; the small oil pipe is high in throwing and fishing capacity, and throwing and fishing of the electric submersible pump in a highly-deviated well and a horizontal well can be achieved.

The invention discloses a multi-branch horizontal well branch subdivision rotation production process pipe column and method. The multi-branch horizontal well branch subdivision rotation production process pipe column comprises a main branch pipe column, a first branch sand control section releasing pipe column and a second branch sand control section releasing pipe column. The vertical end of the main branch pipe column sequentially comprises a first cable passing production packer, a first electric control bottom-hole regulator, a second cable passing production packer and a second electric control bottom-hole regulator from top to bottom, the horizontal end of the main branch pipe column is provided with a plurality of cabins, and each cabin is internally provided with an electric control bottom-hole regulator; the end of the first branch sand prevention section releasing tubular column is arranged at the lower end of the second cable passing production packer, the end of the second branch sand prevention section releasing tubular column is arranged between the first cable passing production packer and the second cable passing production packer, and a plurality of cabins are arranged in the first branch sand prevention section releasing tubular column and the second branch sand prevention section releasing tubular column respectively. And a pressure-controlled bottom-hole regulator is arranged in each cabin. According to the invention, the bottom-hole regulator corresponding to each branch production cabin is opened or closed according to production requirements, so as to realize multi-branch alternate production or commingled production.

The utility model relates to the technical field of packers, and discloses a supporting device for a petroleum drilling and production packer, which comprises a pipe body, a supporting ring is fixedly connected outside the pipe body, two sides of the supporting ring are fixedly connected with a connecting component for fixing, and the connecting component is fixedly connected with the pipe body. The bottom end of the side, away from the pipe body, of the connecting assembly is fixedly connected with a telescopic assembly used for adjusting the supporting height of the pipe body, the bottom end of the telescopic assembly is rotationally connected with a second rotating block, the bottom end of the second rotating block is fixedly connected with a bottom column, and a direct current motor outside the bottom column is provided with a lantern ring. A plurality of sliding blocks are fixedly connected to the inner side of the lantern ring, and a plurality of side blocks are fixedly connected to the outer side of the lantern ring. According to the utility model, by pressing and rotating the lantern ring, the sliding block is clamped with the inner wall of the bottom end of the bottom column under the pulling of the spring II, so that the extension plate extends out, the overall area of the bottom block is increased, stable support is provided for the pipe body, and the probability of damage is reduced.

A method of extracting heat from hydrocarbon production or injection wells involves passing heat exchanger tubing down an active production or injection well and securing it. Heat from the formation or from fluids in the production tubing or annulus is extracted and returned to the surface to be used in various ways on a platform, e.g. heating accommodation or water supplies. The heat exchanger tubing may be delivered on coil tubing into the production tubing and anchored above the DHS V, in a retro-fit operation. Alternatively, it may be installed in a sidetrack well via a dedicated kickoff. If installed at the completion of the well, the heat exchanger tubing may be located in the annulus, mounted on the outside of the production tubing; in this event the heat exchanger tubing may extend further into the well to, or even beyond, the production packer.

The invention discloses a carbon dioxide oil displacement well completion pipe string which comprises a casing pipe, an oil pipe arranged in the casing pipe, a production packer, multiple sets of packing assemblies and an optical fiber pressure monitoring mechanism. The multiple sets of packing assemblies are located below the production packer and distributed at intervals, and the lower space, located below the production packer, of the casing pipe is divided into multiple sections of cavities. The oil pipe penetrates through the production packer and the multiple sets of packing assemblies, and a hydraulic control injection allocation device is arranged on the oil pipe section located in each cavity and connected to a control system through a hydraulic control pipeline. The optical fiber pressure monitoring mechanism is used for monitoring air pressure in the cavity; the control system cooperates with the air pressure measured by the optical fiber pressure monitoring mechanism, the opening degree of the hydraulic control injection allocator is adjusted through the hydraulic control pipeline, and then the carbon dioxide injection amount is adjusted. Through the cooperation of the hydraulic control injection allocator and the optical fiber pressure monitoring mechanism, the dynamic regulation and control of the gas injection amount of each layer of cavity is realized, the problem of low sweep efficiency caused by non-uniform gas injection of a traditional tubular column is solved, and the recovery efficiency can be greatly improved.

The invention is a method for temporary well isolation during a well completion phase, wherein the method comprises the steps of: running a production tubing (12) with at least one glass disc (20) installed, through a wellhead (10) and into a reservoir (16) in a subterrain formation (18), wherein the glass disc (20) is run in a completion fluid that is heavier than the reservoir pressure, wherein the pressure above and below the glass disc (20) is kept equal during the run in state, setting a production packer (14) and pressure test against the glass disc (20), circulating in a lighter fluid or gas to lighten a column on an upper side of the glass disc (20), characterized by creating an underbalanced pressure on the upper side of the glass disc (20), sufficient to force the glass disc (20) against a glass disc break mechanism (22) disposed on said upper side of the glass disc (20), and shatter the glass disc (20) to open the well and allowing flow in the production tubing (12).

The utility model discloses an anti-sulfur removable production packer capable of sampling, and belongs to the field of packers.The anti-sulfur removable production packer capable of sampling comprises a packer body, a sampling assembly is arranged on the front face of the packer body and comprises a connecting pipe, the connecting pipe is fixedly connected with the front face of the packer body, an extraction pump is fixedly connected to the upper portion of the connecting pipe, and the upper portion of the extraction pump is fixedly connected with the lower portion of the packer body; the extraction pump is fixedly connected with the front face of the packer body, the upper portion of the extraction pump is connected with a detector through a conveying pipe line, the detector is fixedly connected with the front face of the packer body, an alarm is fixedly installed on the upper portion of the detector, and an extraction assembly is arranged on the left side of the detector. A filling assembly is arranged on the outer surface of the packer body. By arranging the sampling assembly, when an oil well is packed by the packing piece on the packer body, gas or liquid below the packing piece can be extracted for detection, the effect of conveniently testing underground substance composition is achieved, and the effect of preventing poison can be achieved.