CN212898468U - Tracer bridge plug assembly - Google Patents
Tracer bridge plug assembly Download PDFInfo
- Publication number
- CN212898468U CN212898468U CN202021123911.0U CN202021123911U CN212898468U CN 212898468 U CN212898468 U CN 212898468U CN 202021123911 U CN202021123911 U CN 202021123911U CN 212898468 U CN212898468 U CN 212898468U
- Authority
- CN
- China
- Prior art keywords
- tracer
- bridge plug
- tracing
- plug assembly
- assembly according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The present application relates to a tracer bridge plug assembly. The tracing bridge plug assembly comprises a one-way tool and a tracing bridge plug, the tracing bridge plug comprises a central tube, a barrel body component and a lower connector, cavities are formed in the central tube and the lower connector, the barrel body component is arranged on the outer wall of the central tube, a plugging part is arranged at the upper end of the central tube, a first clamping and pressing component is arranged between the upper end of the central tube and the barrel body component, and a second clamping and pressing component is arranged between the barrel body component and the lower connector; and a tracer element is arranged in the cavity of the central pipe and/or the lower joint or at the joint of the central pipe and the lower joint. By adopting the tracing bridge plug assembly, the produced liquid of each layer of each section of the shaft bottom can be accurately measured, and the operation is simple.
Description
Technical Field
The application relates to a trace bridge plug assembly, which is applicable to the technical field of oil and gas development.
Background
The continuous progress of the volume fracturing technology assists exploration and development to be switched from a conventional oil reservoir to a compact oil reservoir. The volume fracturing technology mainly comprises well cementation and completion fracturing technologies such as bridge plug perforation, hydraulic sand blasting perforation dragging fracturing, well cementation sliding sleeve fracturing and the like, wherein the bridge plug perforation fracturing technology is most widely applied at present. In the fracturing process, partial well sections are insufficiently reformed due to the heterogeneity of oil reservoirs, so that the well sections are not fully used, and the development benefit is influenced. If the liquid production contribution of each layer section after the reconstruction is known, guidance is provided for fracturing optimization of a later-stage block.
At present, the petroleum industry has limited underground liquid production testing technology, and the method mainly comprises an instrument testing method and a sectional testing method. The instrument testing method mainly adopts a coiled tubing to put a testing instrument into the lower well section for testing oil, gas and water three phases. The process has the characteristic of high testing accuracy. But the test needs the well bore unobstructed, and for the well adopting bridge plug perforation fracturing, the bridge plug needs to be drilled out first and then the instrument is put into the well for testing, and the test procedure is complex and the cost is higher. The sectional test method mainly adopts a pipe column running tool to perform sectional trial production on a horizontal section, and the liquid production condition of each section is judged in a ground metering mode. The process has high requirements on the pressed shaft, large operation risk and long period, and is less in field application.
Chinese patent application 201210089597.2 discloses a staged fracturing method for a low permeability reservoir horizontal well, which comprises fracturing a first construction section and a second construction section on both sides of a construction unit, changing the stress of the second construction section in the middle of the construction unit, so that the second construction section generates micro-cracks, and when the second construction section is fractured, complex reticular cracks are generated, which are large in volume and have better communication effect, thereby improving the yield increasing effect of the horizontal well and the yield of a single well.
Chinese patent application 201120264158.1 discloses a composite bridge plug for fast drilling of a horizontal well, which is applied to fracturing and plugging construction of oil and gas wells in oil fields. The lower end of the upper joint is connected with a central pipe, and the lower end of the central pipe is connected with a lower joint; the long rubber sleeve is sleeved in the middle of the outer wall of the central pipe; the upper end and the lower end of the long rubber cylinder are respectively sleeved with a short rubber cylinder, a rubber cylinder seat, a supporting sleeve, a slip and a seat ring, and the pin passes through the radial hole of the lower joint and is fixed on the central pipe; the lower part of the annular step of the lower joint is sleeved with a pumping ring. The upper end of the central tube is provided with a check valve. The composite bridge plug of the type only has the traditional function of fracturing the bridge plug and does not have the function of tracing produced liquid.
In the prior art, neither in a test method of an underground liquid production profile nor in an underground composite bridge plug, a bridge plug with a tracing function is produced, and a construction process for carrying out an underground liquid production test by adopting a tracing bridge plug assembly is not disclosed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a spike bridging plug subassembly aims at solving the relatively poor problem of present liquid testing tool to sleeve pipe staged fracturing technology suitability.
On one hand, the application relates to a tracing bridge plug assembly, which comprises a one-way tool and a tracing bridge plug, wherein the tracing bridge plug comprises a central pipe, a barrel body component and a lower joint, cavities are arranged inside the central pipe and the lower joint, the barrel body component is arranged on the outer wall of the central pipe, and a plugging part is arranged at the upper end of the central pipe; and a tracer element is arranged in a cavity of the base pipe and/or the lower joint or at the joint of the base pipe and the lower joint, or a tracer is contained in the one-way tool or the base pipe of the tracer bridge plug.
The cylinder body part comprises a rubber cylinder and cones respectively arranged at the upper part and the lower part of the rubber cylinder, and an outer expansion ring, an inner expansion ring and a protective ring are sequentially arranged outside the rubber cylinder and the cones; a first clamping and pressing component is arranged between the upper end of the central tube and the barrel body component, a second clamping and pressing component is arranged between the barrel body component and the lower joint, the first clamping and pressing component comprises a pressing cap and a first slip, and the second clamping and pressing component comprises a second slip; the first slip and the second slip are respectively clamped on the upper cone and the lower cone.
Wherein, the tracer is a net tracer, a rod tracer, a ring tracer, a granular tracer or a strip tracer, or is a coating or an attachment arranged on the inner wall of the cavity of the tracing bridge plug. The tracer may be at least one of an oil soluble tracer, a water soluble tracer or an aerosol tracer. The blocking portion may be stepped and the one-way tool may be a soluble ball.
Adopt the tracer bridge plug subassembly of this application to carry out especially horizontal well fracturing operation in the pit, after soluble one-way instrument dissolves, can obtain the liquid production condition and the oil production condition of each section in the pit according to the content of the tracer material who returns to ground to the realization is to the accurate test of the liquid production condition in the pit, makes the liquid production result measurement accurate, easy operation, has wide market prospect.
Drawings
FIG. 1 is a schematic view of one embodiment of a tracer bridge plug assembly according to the application.
Fig. 2 is a schematic cross-sectional view of a mesh tracer in accordance with a tracer bridge plug assembly.
FIG. 3 is a schematic view of another embodiment of a tracer bridge plug assembly according to the application.
FIG. 4 is a schematic view of yet another embodiment of a tracer bridge plug assembly according to the application.
FIG. 5 is a schematic illustration of a staged fracturing operation downhole using a tracer bridge plug assembly.
FIG. 6 is a schematic representation of a flowback condition after a staged fracturing operation downhole using a tracer bridge plug assembly.
FIG. 7 is a schematic view of another embodiment of a unidirectional tool in a tracer bridge plug assembly according to the application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
As shown in FIG. 1, the application's tracer bridge plug subassembly includes one-way tool 1 and tracer bridge plug, and the tracer bridge plug includes center tube 2, stack shell part and lower clutch 10, and the inside of center tube 2 and lower clutch 10 has the cavity, and the stack shell part is located on the outer wall of center tube 2. The upper end of the central tube 2 is provided with a step-shaped plugging portion 17, such as a straight line or an arc line, so that the step portion can be plugged to complete fracturing when the unidirectional tool 1 is subjected to external force from above, and during the flowback process after the unidirectional tool is dissolved, the plugging position is opened, so that the flowback well fluid flows back to the ground for detection. The one-way tool 1 may be a soluble ball or may be a tool that forms a one-way structure in combination with a bridge plug, or other equivalent alternatives may be used. The ratio of the inner diameter sizes of the central tube 2 and the lower joint 10 may be 0.5-2.
A first clamping and pressing component is arranged between the upper end of the central tube 2 and the cylinder body component, and a second clamping and pressing component is arranged between the cylinder body component and the lower joint 10. The barrel body part comprises a rubber barrel 9 and also comprises a cone 5 which is respectively arranged at the upper part and the lower part of the rubber barrel 9, and an outer expansion ring 6, an inner expansion ring 7 and a protective ring 8 are sequentially arranged outside the rubber barrel 9 and the cone 5. The first clamping and pressing component comprises a pressing cap 3 and a first slip 4, and the second clamping and pressing component comprises a second slip. The first slips 4 and the second slips are engaged with the upper and lower cones 5, respectively. A tracer is provided in the cavity of the base pipe 2 and/or the lower joint 10 or at the intersection of the base pipe 2 and the lower joint 10.
The tracer can select different structure types such as netted tracer, shaft-like tracer, cyclic annular tracer, granular tracer or strip tracer, also can be the coating or the attachment of setting on the tracer bridge plug cavity inner wall, still can be the tracer that contains in the bridge plug body. The tracer elements can be oil-soluble tracer elements, water-soluble tracer elements or aerosol tracer elements or any combination thereof, different tracer elements can be installed according to the requirements, and the tracer elements can also be used in different combinations.
In the first embodiment, as shown in fig. 1, the tracer is disposed at the junction of the base pipe 2 and the lower joint 10, and a fixing portion for fixing the tracer is provided in the base pipe 2 or the lower joint 10. The tracer shown in fig. 1 is a mesh tracer 11, and the mesh tracer 11 includes an outer ring and at least one of an oil-soluble tracer, a water-soluble tracer and a water-soluble tracer disposed in the outer ring. As shown in fig. 2, the mesh tracer includes an outer ring and disposed within the outer ring an oil soluble tracer 14, a water soluble tracer 15 and a gas soluble tracer 16.
In a second embodiment, as shown in figure 3, the tracer is a rod-shaped tracer 12. A rod-shaped tracer 12 is arranged in the cavity of the lower joint 10, and the two ends of the tracer are respectively arranged in the lower joint 10.
In a third embodiment, as shown in fig. 4, the tracer is a strip tracer 13. The strip-shaped tracer elements 13 are arranged in the cavity of the central tube 2, and the tracer elements can be arranged at intervals along the circumference of the inner wall of the central tube or the lower joint.
In a fourth embodiment, the unidirectional tool may be configured to contain a soluble material, either on the surface or within the unidirectional tool. As described above, the one-way tool may employ a soluble ball, or may be a soluble part that forms a one-way structure in combination with a bridge plug, such as the plate-shaped one-way tool 1 shown in fig. 7, and other equivalent alternatives may also be employed.
When utilizing the tracer bridge plug assembly of the present application to perform a downhole fracturing operation, the tools used in the operation include a tracer bridge plug, a multi-stage perforation tool, and a soluble ball. The main measures include that after well cementation, fracturing construction is carried out on a first section by adopting a perforation or a toe end valve and other modes, a tracing bridge plug assembly is put in to carry out next section fracturing, and the tracing bridge plug assembly consists of a tracing fracturing bridge plug and a one-way tool; sequentially reforming the horizontal section according to the process flow of the bridge plug staged fracturing; and (4) performing liquid discharge production after fracturing, and returning liquid of each section to the ground through the tracing bridge plug assembly. The tracing bridge plug assembly adopts the synthetic structure design, when oil-gas-water flows through the tracing bridge plug assembly, a certain amount of tracer is dissolved, each section adopts different tracers, and the liquid production condition of each section can be obtained by sampling and analyzing the measured liquid amount on the ground; and when the unsealing is needed, drilling out by adopting the coiled tubing. The application of the tracer bridge plug can be made of a fast drilling material, can also be made of a dissolving material, can also be made of a soluble material or a fast drilling material and a tracer material which are integrated to form the tracer material with a tracing function, and can be made into a fracturing ball or a fracturing bridge plug to achieve the tracing function.
Utilize the tracer bridge plug subassembly of this application to carry out fracturing operation in the pit including following step:
(1) running a multi-stage perforation tool and a tracing bridge plug downhole along a casing;
(2) controlling the action of the tracing bridge plug to enable an expansion ring outside the tracing bridge plug to be expanded to abut against the inner wall of the sleeve, and setting the bridge plug;
(3) separating the multi-stage perforation tool from the tracing bridge plug, lifting the multi-stage perforation tool to a first construction section, and completing first perforation operation;
(4) lifting the multi-stage perforation tool to a second construction section, completing second perforation operation, and repeating the steps until the whole section of perforation operation is completed;
(5) putting a one-way tool into the casing from the wellhead, wherein the one-way tool can be a soluble ball or a component with similar functions, the soluble ball enters a plugging position to plug the inlet of the tracing bridge plug under the action of fluid pressure, and the fluid enters a perforation position to complete well section fracturing;
(6) after the soluble ball is dissolved, the internal channel of the tracing bridge plug is opened, well fluid returns to the casing from the tracing bridge plug and passes through the tracing piece in the tracing bridge plug, the tracing material can be dissolved in the fluid and returns to the ground along with the fluid, the amount of the fluid is measured on the ground, the content of each tracing material is obtained through sampling analysis, and the fluid production condition and the oil production condition of each section in the well can be obtained.
Referring to fig. 5 and 6, there is shown a schematic representation of a preferred embodiment of a downhole fracturing operation using the tagged bridge plug assembly of the present application, with one tagged bridge plug disposed on each perforation segment. The method specifically comprises the following steps:
(1) running a perforation tool with a tracer bridge plug 24 into the casing 21 downhole;
(2) controlling the action of the tracing bridge plug 24 to enable an expansion ring outside the tracing bridge plug 24 to be expanded to abut against the inner wall of the sleeve 21, and setting the bridge plug;
(3) separating the perforation tool from the tracing bridge plug 24, lifting the perforation tool to a first construction section, and completing first perforation operation;
(4) lifting the multi-stage perforation tool to a second construction section, completing second perforation operation, and the like until multi-stage perforation operation is completed, thereby forming multi-stage perforations 22 in the stratum;
(5) putting a soluble ball 23 into the casing 21 from a wellhead, wherein the soluble ball 23 enters a plugging position to plug the inlet of the tracing bridge plug under the action of fluid pressure, and the fluid enters a perforation position to complete well section fracturing;
(6) after the construction sections with the preset number are completed, the second tracing bridge plug 24 is put in again, the steps (1) - (5) are repeated, and the rest is done in sequence to complete the fracturing operation of the whole well section; wherein, different tracing materials are respectively adopted in the plurality of tracing bridge plugs 24;
(7) after the soluble ball is dissolved, an internal channel of the tracing bridge plug 24 is opened, well fluid returns into the casing 21 from the tracing bridge plug 24 and passes through a tracing piece 25 in the tracing bridge plug, and a tracing material is dissolved in the fluid and returns to the ground along with the fluid;
(8) and (3) measuring the liquid quantity on the ground, sampling and analyzing to obtain the content of each tracer material, and obtaining the liquid production condition and the oil production condition of each section in the well.
Adopt the tracer bridge plug subassembly of this application to carry out fracturing operation in the pit, through set up different tracer materials in the tracer bridge plug of every construction section, after soluble one-way instrument dissolves, can obtain the liquid production condition and the oil production condition of each section in the pit according to the content of the different tracer materials of flowback to ground to the realization is to the test of the liquid production condition in the pit. The test method has the advantages of accurate measurement of the liquid production result of each layer, simple operation and wide market prospect.
Although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.
Claims (8)
1. A tracing bridge plug assembly is characterized by comprising a one-way tool and a tracing bridge plug, wherein the tracing bridge plug comprises a central pipe, a barrel body component and a lower joint, cavities are formed in the central pipe and the lower joint, the barrel body component is arranged on the outer wall of the central pipe, and a plugging part is arranged at the upper end of the central pipe; and a tracer element is arranged in a cavity of the base pipe and/or the lower joint or at the joint of the base pipe and the lower joint, or a tracer is contained in the one-way tool or the base pipe of the tracer bridge plug.
2. The tracer bridge plug assembly according to claim 1, wherein the barrel body component comprises a rubber barrel and further comprises cones respectively arranged at the upper part and the lower part of the rubber barrel, and an outer expansion ring, an inner expansion ring and a guard ring are sequentially arranged outside the rubber barrel and the cones.
3. A tracer bridge plug assembly according to claim 2, wherein a first crimp member is disposed between the upper end of the base pipe and the barrel member, and a second crimp member is disposed between the barrel member and the lower coupling, the first crimp member including a press cap and a first slip, the second crimp member including a second slip; the first slip and the second slip are respectively clamped on the upper cone and the lower cone.
4. A tracer bridge plug assembly according to any of claims 1-3, wherein the tracer is a mesh tracer, a rod tracer, an annular tracer, a granular tracer or a strip tracer, or a coating or an attachment disposed on an inner wall of the tracer bridge plug cavity.
5. A tracer bridge plug assembly according to any of claims 1-3, wherein the tracer is at least one of an oil-soluble tracer, a water-soluble tracer or an aerosol tracer.
6. A tracer bridge plug assembly according to any of claims 1-3, wherein the plug portion is stepped.
7. A tracer bridge plug assembly according to any of claims 1-3, wherein the one-way tool is a soluble tool capable of forming a one-way structure in combination with a bridge plug.
8. The tracer bridge plug assembly of any of claims 1-3, wherein the one-way tool is a dissolvable ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021123911.0U CN212898468U (en) | 2020-06-17 | 2020-06-17 | Tracer bridge plug assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021123911.0U CN212898468U (en) | 2020-06-17 | 2020-06-17 | Tracer bridge plug assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212898468U true CN212898468U (en) | 2021-04-06 |
Family
ID=75278523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021123911.0U Active CN212898468U (en) | 2020-06-17 | 2020-06-17 | Tracer bridge plug assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212898468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594150A (en) * | 2020-06-17 | 2020-08-28 | 西安恩诺维新石油技术有限公司 | Tracer bridge plug assembly and method for performing downhole liquid production test by using same |
-
2020
- 2020-06-17 CN CN202021123911.0U patent/CN212898468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111594150A (en) * | 2020-06-17 | 2020-08-28 | 西安恩诺维新石油技术有限公司 | Tracer bridge plug assembly and method for performing downhole liquid production test by using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2399527C (en) | Method for determining formation characteristics in a perforated wellbore | |
| CN111119826B (en) | Coiled tubing staged fracturing string and string fracturing method | |
| CN109025977B (en) | Low-cost long-acting intelligent password water finding and controlling system and method | |
| CN207245703U (en) | Horizontal well produced fluid cross section tubing string | |
| EP0911485A2 (en) | Formation evaluation testing apparatus and method | |
| CN104500057A (en) | Testing method of liquid producing profile of horizontal well | |
| CN108104801A (en) | A kind of horizontal well tracer producing profile testing tubing string and method | |
| CN104594889B (en) | A kind of Accurate Determining oil well remaining oil preserves the devices and methods therefor of position | |
| CN109138978B (en) | Horizontal well oil production contribution testing method based on controlled release tracer technology | |
| CN108952656A (en) | Multistage pressure break horizontal well produced fluid cross section method and tubing string | |
| CN212898468U (en) | Tracer bridge plug assembly | |
| CN111577257B (en) | Horizontal well subsection setting type flow metering water exploration pipe column and water exploration method thereof | |
| CN112267876B (en) | Formation pressure measurement while drilling tool with double packer structures and testing method | |
| CN114876408A (en) | Chute counting type infinite-grade full-bore well completion fracturing device | |
| CN105317410A (en) | Eccentric water distributor | |
| CN111335874B (en) | Oil-gas well cementing cement packing capacity detection device and detection method thereof | |
| CN111594150B (en) | Tracer bridge plug assembly and method for performing downhole liquid production test by using same | |
| CN2926503Y (en) | Single-layer packing sampling tester for oil well | |
| CN107725029A (en) | A kind of underground coal mine long drilled holes gas flow test device and method | |
| CN207863945U (en) | A kind of underground coal mine long drilled holes gas flow test device | |
| CN110671086B (en) | Composite acid fracturing construction pipe column and application method | |
| CN216588560U (en) | Plateau continental facies shale gas testing and flowback equipment | |
| CN107448177B (en) | Oil well liquid production profile testing pipe column and testing method thereof | |
| CN202250054U (en) | Long probe system | |
| CN102337872A (en) | One-grade three-section integrated water distribution tubular column of horizontal well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220919 Address after: No. 4980-1-20, Jinxi 3rd Street, Baijiitan District, Karamay City, Xinjiang Uygur Autonomous Region 834007 Patentee after: Karamay Zhilian Petroleum Technology Development Co.,Ltd. Address before: Room 11302, block a, Zizhu garden, No.108, west section of south 2nd Ring Road, Yanta District, Xi'an City, Shaanxi Province, 710000 Patentee before: Xi'an jinjiuling Machinery Technology Co.,Ltd. |