CN206513354U - A kind of new perforating system - Google Patents
A kind of new perforating system Download PDFInfo
- Publication number
- CN206513354U CN206513354U CN201720120181.0U CN201720120181U CN206513354U CN 206513354 U CN206513354 U CN 206513354U CN 201720120181 U CN201720120181 U CN 201720120181U CN 206513354 U CN206513354 U CN 206513354U
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- Prior art keywords
- perforating
- string
- cable
- logging cable
- perforation
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Abstract
The utility model is related to a kind of new perforating system, including prospecting tools string and perforation tool string, and prospecting tools string includes logging cable one, and acoustic variable-density instrument one, Natural Gamma Ray Tool one and the magnetic location logger one being connected with logging cable one；The perforation tool string includes logging cable two, the cable protecting device being arranged on logging cable two and the logger string being sequentially connected, perforator and at least one section weighted lever, and logger string includes the magnetic location logger two and head harness being connected with logging cable two.Because gas production tubing string internal segment stream valve is blocked or wax deposition, sand bury etc. and to cause the technical problem of gas production oil pipe blocking during for gas well gas production, the utility model realizes Operating Pressure using the high-pressure sealed blowout hookup of cable, perforation is carried out to oil pipe by precise positioning, the gas production passage between oil pipe and stratum is connected, has not only needed Operating Pressure to play flowline but also can realize and has improved gas well deliverability using oil pipe gas production.
Description
Technical field
The utility model is related to Oilfield Natural Gas Plant exploitation field, is that a kind of stifled perforation buried of Oil/gas Well flow string that solves is filled
Put.
Background technology
The gas well of most oil gas fields domestic at present uses Φ 139.7mm cased hole completions, utilizes the oil pipe mode gas production of Φ 73.This
Gas production mode is planted to bury now through often occurring the blocking of oil pipe gas production choke valve or aerogenesis well section and neighbouring sand after producing after a while
As, cause oil pipe gas production channel blockage can not normal work so as to influenceing gas yield.For such case, mostly using two kinds of sides
Formula solves problem：
1st, using sleeve pipe gas production mode, there is following defect in sleeve pipe gas production：
1) due between sleeve pipe and oil pipe annular space cause down-hole pressure small greatly, natural gas collecting efficiency is low；
2) due to payzone water outlet, cause to take outlet capacity upwards not enough because pressure is low during gas production, fluid column is raised because of ponding, underground
Head of liquid increase, causes payzone water logging problem；
2nd, Operating Pressure plays flowline and reinstalls choke valve, or sand washing operation with pressure, there is that potential safety hazard is big, efficiency
The problem of low and cost is too high.
The content of the invention
Because gas production tubing string internal segment stream valve is blocked or aerogenesis well section wax deposition, sand is buried causes when the utility model is directed to gas well gas production
Gas production oil pipe blocking is forced the yield decline, payzone water logging, cost brought using sleeve pipe gas production or lower oil tube operation with pressure
Increase and exist the technical problem of potential safety hazard, the utility model provides a kind of in gas well gas production tubing string generation blocking or payzone sand
The device of rail perforation offer aerogenesis passage is provided when burying.
Technical solution of the present utility model：
A kind of new perforating system, its difference is：Including prospecting tools string and perforation tool string, the school is deep
Visit liquid level and sand buries tool string and includes logging cable one, and acoustic variable-density instrument one, the natural gal being connected with logging cable one
Ma Yiyi and magnetic location logger one；
The perforation tool string includes logging cable two, the cable protecting device that is arranged on logging cable two and successively
Logger string, perforator and at least one section weighted lever of connection, the logger string include being connected with logging cable two
Magnetic location logger two and head harness, the perforator be located at head harness lower section, the weighted lever be located at perforator
Lower end.The perforation tool string works according to the result of detection of prospecting tools string.
Further, the perforator includes perforating gun, firing mount and perforating bullet, and the perforating gun is penetrated for Φ 51mm routine
Hole rifle.This structure is used when hole deviation is less than 20 °.
Further, the perforator includes perforating gun, firing mount and perforating bullet, and the perforating gun is connected with firing mount by bearing
Connect, shell hole and eccentricity balance-weight block be provided with the firing mount, the direction of the eccentricity balance-weight block is in opposite direction or vertical with shell hole,
The perforating bullet is arranged in shell hole.Described perforating gun one end is connected with weighted lever, the other end and head harness of the perforating gun
Connection.This structure is used when hole deviation is more than 20 °.
Further, in above two structure, 2-3 shell hole is provided with every meter of firing mount.
Further, a diameter of 8mm of logging cable one and logging cable two.Cable during perforation is avoided to be compressed in perforation
Instrument is with causing cable to cause cable fracture of wire equivalent damage when meeting card or unfreezing in oil pipe gap.
Further, the material of weighted lever is wolfram steel, and the size of weighted lever is Φ 51mm*500mm.Weighted lever can be one
Section, two sections or three sections.Both ensured that perforator size was short, weight foot, which smoothly rises, goes into the well, and has enough weight to avoid perforation moment rifle again
Alter with it excessive.
Further, a diameter of 5-8mm of perforating bullet, realization does not injure sleeve pipe in perforating process.
The effect that the utility model has：
1st, the utility model realizes Operating Pressure using the high-pressure sealed blowout hookup of cable, and oil pipe is entered by precise positioning
Row perforation, the gas production passage between connection oil pipe and stratum had not only needed Operating Pressure to play flowline but also can realize and has utilized oil pipe
Gas production improves gas well deliverability.
2nd, the utility model does not injure sleeve pipe by setting up the passage of oil pipe and casing annulus in perforating process.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model perforation tool string；
Fig. 2 is that liquid level is visited in the utility model school deeply and sand buries the structural representation of tool string；
Fig. 3, Fig. 4 are the structural representation of the utility model perforator；
Fig. 5, Fig. 6 are structural representation of the perforator in oil pipe when hole deviation is more than 20 °.
Wherein reference is：1- logging cables two, 2- cable protecting devices, 3- logger strings, 4- perforators, 5- adds
Weight bar, 6- logging cables one, 7- magnetic locations logger one, 8- Natural Gamma Ray Tools one, 9- acoustic variable-densities instrument one, 14- oil
Pipe, 41- perforating guns, 42- firing mounts, 43- shell holes, 44- bearings, 45- eccentricity balance-weight blocks.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain
The utility model, is not used to limit the utility model.
Embodiment 1：
A kind of new perforating system, including school visits liquid level deeply and sand buries tool string (i.e. prospecting tools string) and perforation tool
String, as shown in figure 1, liquid level is visited in school deeply and sand buries tool string and includes logging cable 1, and the sound wave being connected with logging cable becomes
Density Measuring Instrument 1, Natural Gamma Ray Tool 1 and magnetic location logger 1；
As shown in Fig. 2 perforation tool string includes logging cable 21, the cable protecting device being arranged on logging cable 21
2 and the logger string 3, perforator 4 and the weighted lever 5 that are sequentially connected, logger string 3 includes being connected with logging cable two
Magnetic location logger two and head harness.
Embodiment 2：
As shown in Figure 3, Figure 4, perforator includes perforating gun 41, firing mount 42 and perforating bullet.The He of shell hole 43 is provided with firing mount
Eccentricity balance-weight block 45, the direction of eccentricity balance-weight block 45 is in opposite direction or vertical with shell hole 43, and perforating bullet is arranged in shell hole.Perforation
A diameter of 5-8mm of bullet.Connected between perforating gun and firing mount with bearing 44, the two is carried out axially opposing rotation, firing mount
Internal setting-up eccentricity balancing weight, under gravity, one side equipped with eccentricity balance-weight block is rotated down naturally, eccentricity balance-weight block side
To in opposite direction or vertical with shell hole, you can avoid perforator and realize positioning with the minimum and maximum direction in oil pipe gap.
It is preferred that, 2-3 shell hole is provided with every meter of firing mount.
Embodiment 3：
Using 51mm perforating guns, it is suitable for smoothly going into the well in internal diameter 62mm oil pipes, while not influenceing perforating effect, matches
Corresponding perforating bullet, firing mount size.
Perforator is combined with 8mm logging cables two.Perforation tool is 5.5mm with oil pipe gap, much smaller than 8mm, it is to avoid penetrate
Cable is compressed in perforation tool with causing cable to cause cable fracture of wire equivalent damage when meeting card or unfreezing in oil pipe gap during hole.
Cable protecting device, prevents from altering on the detonation moment body of a gun and causes cable to squeeze into space between rifle and oil pipe.Weighted lever is adopted
With wolfram steel, size is Φ 51mm*500mm, general to be saved from three, can suitably be increased and decreased according to down-hole pressure.Both perforator chi had been ensured
Very little short, weight foot, which smoothly rises, goes into the well, have again enough weight avoid altering on the perforation moment body of a gun it is excessive.
Embodiment 4：
Two kinds of perforating gun string structures, hole deviation uses common body of a gun structure normal perforation when being less than 20 °, when hole deviation is more than 20 °
Using interior orientation perforating appliances, as shown in Figure 5, Figure 6, perforator and the minimum and maximum direction perforation in oil pipe gap are avoided, prevented
Only be shot through oil pipe effect it is bad or damage sleeve pipe.
Liquid level is visited in school deeply and sand buries tool string, and size is external diameter 51mm acoustic variable-densities instrument two, Natural Gamma Ray Tool two, magnetic
Bit combination is logged well.Cable blowout control device is applied to 8mm cable blowout controls.
A kind of construction environment of the present utility model：Construction well should possess using Φ 139.7mm cased hole completions, gas production tubing string Φ
73 oil pipes and choke valve (also can be without choke valve) mode of production, pipe aperture 62mm, wall thickness 5.51mm, liquid-column height in oil pipe
It is not less than 500m, sand and buries the condition for being less than 35MPa no more than 30m, well head pressure.
Embodiment 5：
1) preparatory stage：
1.1) construction well should possess (may not be used using Φ 139.7mm cased hole completions, the oil pipes of gas production tubing string Φ 73 and choke valve yet
Band choke valve) mode of production, pipe aperture 62mm, wall thickness 5.51mm, liquid-column height is not less than 500m, sand and buried and is no more than in oil pipe
30m, well head pressure are less than 35MPa condition.
1.2) construction should possess logging truck, Φ 8mm single-cord well loggings cable, cable protecting device, Φ 51mm variable density logs
Instrument, GR instrument, the logger string of magnetic location instrument and head harness composition, pressure-resistant it is suitable for 5-8mm more than 35MPa
The cable perforation blowout hookup of cable, cable perforation preventer, the perforating guns of Φ 51, perforating bullet, weighted lever, pump truck, water-tank lorry, hang
The equipment and instruments such as car.Cable perforation blowout hookup includes control head, lubricator, cable blowout control device and well drilling blowout prevention device.It is sliding
Wheel is fixed on hoisting hook, and logging cable bypasses top sheave, and one end of logging cable is by controlling head and the survey in lubricator
Measuring appratus is connected, and the other end is fastened on logging truck.
1.3) the cementing quality data of construction well should be consulted before constructing, it is ensured that cementing quality is intact, and this well is not through excessive
Transformation, in order to avoid well cementation reset condition can not be kept to cause has channeling.
1.4) close and install pressure-resistant more than 35MPa cable perforation blowout hookups after shaft collar.
1.5) logging cable is passed through into control head and lubricator.
2) logging cable one is connected with acoustic variable-density one, Natural Gamma Ray Tool one, magnetic location logger one, above carried
Logging cable one, acoustic variable-density instrument one, Natural Gamma Ray Tool one, magnetic location logger one are carried in lubricator, will be anti-
Jet pipe is connected with one end of cable blowout control device, and the other end of cable blowout control device is connected with well drilling blowout prevention device.It is slow to open well head lock
Door, when starting to transfer logging cable after pressure balance in well head pressure and lubricator, by acoustic variable-density instrument one, Natural Gamma Ray Tool
First, the first-class logging instrument of magnetic location logger, which is transferred in down-hole oil tube, measures.
3) curve is surveyed according to acoustic variable-density instrument one, Natural Gamma Ray Tool one, the first-class logging instrument of magnetic location logger
Judge liquid level and sand buried depth degree.If liquid level is less than 500 meters, pass through pump truck pressure water injection to 500 meters of liquid levels.
3) measurement above carries logging cable after finishing, and acoustic variable-density instrument one, Natural Gamma Ray Tool one, magnetic location first-class are surveyed
Well instrument is carried in lubricator, closes shaft collar, discharges blowout prevention overpressure.
4) lubricator is opened, acoustic variable-density instrument, Natural Gamma Ray Tool, magnetic location logging instrument are torn open from logging cable head
Under.Perforating bullet is assembled by every meter of 2-3 hair with perforating gun simultaneously.
5) perforator, head harness, cable protecting device, logger string and weighted lever are connected with perforation cable.Above carry
Perforation cable, perforator, logger string, cable protecting device, weighted lever are carried in lubricator.Logger string includes magnetic
Property locator log instrument two and head harness；
6) lubricator is connected with cable blowout control device, cable blowout control device is connected with well drilling blowout prevention device；
7) shaft collar is slowly opened, will when starting decentralization logging cable after pressure balance in well head pressure and lubricator
Perforator, weighted lever are transferred in down-hole oil tube.
8) perforator, logger string carry out depth correction after reaching precalculated position, and depth determines that principle one is to avoid oil
Pipe, casing coupling, two be to avoid sand to bury position, and position top is buried in sand, and three be the well section for selecting cementing quality good.Above-mentioned three
Point is met simultaneously after, perforating site is tried one's best on the lower, close to gas-bearing formation position perforation.
9) oil pressure, casing pressure data are observed before perforation, perforation of lighting a fire, oil pressure, casing pressure after ground is shaken and lighted a fire according to cable
Numerical value change situation judge whether detonation normal, if cable shake substantially, pressure gauge numerical value before ignition after in the short time
Change is obvious, it was demonstrated that perforation is normal.
10) perforation hole device and its aid string are played.
11) natural gas is gathered.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Any modifications, equivalent substitutions and improvements made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of new perforating system, it is characterised in that：Including prospecting tools string and perforation tool string, the prospecting tools string
Including logging cable one, and the acoustic variable-density instrument one, Natural Gamma Ray Tool one and the magnetic location that are connected with logging cable one are surveyed
Well instrument one；
The perforation tool string includes logging cable two, the cable protecting device being arranged on logging cable two and is sequentially connected
Logger string, perforator and at least one section weighted lever, the logger string includes the magnetic that is connected with logging cable two
Property locator log instrument two and head harness, the perforator is located at the lower section of head harness, and the weighted lever is located under perforator
End；
The perforation tool string works according to the result of detection of prospecting tools string.
2. new perforating system according to claim 1, it is characterised in that：The perforator include perforating gun, firing mount and
Perforating bullet, the perforating gun is Φ 51mm conventional perforation rifle, and described perforating gun one end is connected with weighted lever, the perforating gun
The other end is connected with head harness.
3. new perforating system according to claim 1, it is characterised in that：The perforator include perforating gun, firing mount and
Perforating bullet, the perforating gun is connected with firing mount by bearing, and shell hole and eccentricity balance-weight block, the bias are provided with the firing mount
The direction of balancing weight is in opposite direction or vertical with shell hole, and the perforating bullet is arranged in shell hole, and described perforating gun one end is with aggravating
Bar is connected, and the other end of the perforating gun is connected with head harness.
4. the new perforating system according to Claims 2 or 3, it is characterised in that：2-3 bullet is provided with every meter of firing mount
Hole.
5. new perforating system according to claim 4, it is characterised in that：The diameter of logging cable one and logging cable two
For 8mm.
6. new perforating system according to claim 5, it is characterised in that：The material of the weighted lever is wolfram steel, is aggravated
The size of bar is Φ 51mm*500mm.
7. new perforating system according to claim 4, it is characterised in that：A diameter of 5-8mm of the perforating bullet.
8. new perforating system according to claim 7, it is characterised in that：The weighted lever is three sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720120181.0U CN206513354U (en) | 2017-02-09 | 2017-02-09 | A kind of new perforating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720120181.0U CN206513354U (en) | 2017-02-09 | 2017-02-09 | A kind of new perforating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206513354U true CN206513354U (en) | 2017-09-22 |
Family
ID=59866711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720120181.0U Expired - Fee Related CN206513354U (en) | 2017-02-09 | 2017-02-09 | A kind of new perforating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206513354U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825180A (en) * | 2018-06-13 | 2018-11-16 | 西安奥瑞普瑞电子科技有限公司 | A kind of oil well perforation trajectory observing and controlling positioning system and its observing and controlling localization method |
| CN113565476A (en) * | 2021-08-16 | 2021-10-29 | 物华能源科技有限公司 | Cable conveying motor-driven all-dimensional control perforation system for oil-gas well |
-
2017
- 2017-02-09 CN CN201720120181.0U patent/CN206513354U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825180A (en) * | 2018-06-13 | 2018-11-16 | 西安奥瑞普瑞电子科技有限公司 | A kind of oil well perforation trajectory observing and controlling positioning system and its observing and controlling localization method |
| CN113565476A (en) * | 2021-08-16 | 2021-10-29 | 物华能源科技有限公司 | Cable conveying motor-driven all-dimensional control perforation system for oil-gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20180209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |