CN204040979U - Hi-pot test well low frictional resistance logging cable sealer - Google Patents
Hi-pot test well low frictional resistance logging cable sealer Download PDFInfo
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- CN204040979U CN204040979U CN201420448784.XU CN201420448784U CN204040979U CN 204040979 U CN204040979 U CN 204040979U CN 201420448784 U CN201420448784 U CN 201420448784U CN 204040979 U CN204040979 U CN 204040979U
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- blowout prevention
- prevention box
- choke tube
- logging cable
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Abstract
Be Hi-pot test well low frictional resistance logging cable sealer disclosed in the utility model, can be applicable to the test jobs well of well head pressure at 10-20MPa with in the Hi-pot test well needing well head to pressurize.This sealer comprises pressure cap, the blowout prevention box of packing and tubing nipple is housed, pressure cap is installed on the top of blowout prevention box, between the bottom and tubing nipple of blowout prevention box, the low choke tube that rubs is housed, polyurethane sealing block and cast iron briquetting are housed in the low choke tube that rubs, and logging cable passes from pressure cap, blowout prevention box, low rub choke tube and tubing nipple.This sealer structure is simple, and be easy to processing and installation, dismantle, its good sealing effect, change flow process simple, material consumption is low, time saving and energy saving, cost-saving.The requirement of the environmental protection of oil reservoir logging production safety, cost efficiency can be met.Through field experiment, can bear the well logging high pressure of 10-20MPa, good sealing effect, material consumption is low, and it is convenient to change, also can according to well head pressure situation, and Assembling, conversion use, and have good effect.
Description
Technical field
The utility model relates to the sealing device of field produces borehole log wellhead, particularly Hi-pot test well low frictional resistance logging cable sealer, can be applicable to the test jobs well of well head pressure at 10-20MPa with in the Hi-pot test well needing well head to pressurize.
Background technology
The requisite wellhead cable sealing device of logging operation implemented by sealer.This device is directly connected with the oil pipe of shaft mouth test production tree, can effectively prevent the excessive well liquid caused of down-hole pressure in logging operation excessive, prevent the generation of gas blowout accident, crude oil can be reduced land and the outflow of well liquid simultaneously, reducing the well site pollution that well logging construction causes, is the safety, the environmental practice that ensure well logging construction indispensability." oil and gas well testing " describes the conventional wellhead sealing mode of physics filling, hydraulic packing and pneumostop three kinds at " Pneumatic ejection-preventing box brief introduction " literary composition that in June, 2006 is published.Along with going deep into of field drilling, oil wells get is dark, and well head pressure is also more and more higher, uses the sealing effectiveness of common filling type wellhead sealing device poor, easily cause security incident for high-pressure well, high sour well.The wellhead sealing device of current employing generally takes inner filling nitrile rubber or packing to reduce costs, and installs tension and will strengthen frictional force damage cable cable putting and puts, and uses a period of time to there will be wearing and tearing and aging, greatly reduces sealing effectiveness; Replacing packing is wasted time and energy, and cost consumption can't neglect.Hydraulic packing device gentle dynamic sealer auxiliary equipment is many, and well head is installed complicated, needs special messenger's special hilllock operation, well logging production also can be made normally not carry out once maintenance is broken down not in time.
Summary of the invention
The purpose of this utility model is to provide Hi-pot test well low frictional resistance logging cable sealer, can tolerate the well head high pressure of 10-20MPa, can meet the high-pressure well in oil field and the pressurization needs in testing.Can effective shutoff shaft mouth test, prevent well hydrorrhea stream or blowout, frictional resistance cable put when putting can be reduced again, reduce replacement frequency and the quantity of packing.
Technical solution of the present utility model is: Hi-pot test well low frictional resistance logging cable sealer comprises pressure cap, the blowout prevention box of packing and tubing nipple are housed, pressure cap is installed on the top of blowout prevention box, between the bottom and tubing nipple of blowout prevention box, the low choke tube that rubs is housed, polyurethane sealing block and cast iron briquetting are housed in the low choke tube that rubs, and logging cable passes from pressure cap, blowout prevention box, low rub choke tube and tubing nipple.
The beneficial effects of the utility model are: this sealer structure is simple, and be easy to processing and installation, dismantle, its good sealing effect, change flow process simple, material consumption is low, time saving and energy saving, cost-saving.The requirement of the environmental protection of oil reservoir logging production safety, cost efficiency can be met.Through field experiment, can bear the well logging high pressure of 10-20 MPa, good sealing effect, material consumption is low, and it is convenient to change, also can according to well head pressure situation, and Assembling, conversion use.Blowout prevention box directly can be connected use with tubing nipple when well head pressure is less; Can also add again when well head pressure is excessive to fill a joint or the low choke tube that rubs of more piece, improve sealing performance.Use rear cleaning maintenance simple, the on-the-spot needs of the multiple well logging construction in oil field can be met, there is good effect.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is the front view of polyurethane seal block or cast iron briquette structure schematic diagram.
Fig. 3 is the top view of polyurethane seal block or cast iron briquette structure schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing in detail the utility model is described in detail, see Fig. 1, Hi-pot test well low frictional resistance logging cable sealer comprises pressure cap 1, the blowout prevention box 3 of packing 2 and tubing nipple 8 is housed, pressure cap 1 is installed on the top of blowout prevention box 3, the low choke tube 4 that rubs is housed between the bottom of blowout prevention box 3 and tubing nipple 8, in the low choke tube 4 that rubs, polyurethane sealing block 5 and cast iron briquetting 6 are housed, logging cable 9 passes from pressure cap 1, blowout prevention box 3, low rub choke tube 4 and tubing nipple 8.Low two ends of rubbing choke tube 4 are respectively equipped with external screw thread and internal thread, can be connected with blowout prevention box 3 and tubing nipple 8, and low lower lumen of rubbing choke tube 4 is provided with every platform, and polyurethane sealing block 5 and cast iron briquetting 6 are alternately placed in the top inner chamber of platform.See Fig. 2 and Fig. 3, polyurethane sealing block 5 and cast iron briquetting 6 are involutory semicircular body, and the internal diameter in involutory rear center hole conforms to the external diameter of logging cable 9.Two pieces of similar sealing blocks or press block set are attached together and joins, center logging cable being closed at sealer can be ensured, reduce frictional resistance cable mentioned when transferring, improve well logging timeliness.The low choke tube 4 that rubs at least installs a sealing ring 7 with the connection of thread of tubing nipple 8.The low choke tube 4 that rubs of one joint is at least housed between the bottom of blowout prevention box 3 and tubing nipple 8, and the low screw thread rubbing choke tube 4 two ends is tolerance fit, low for the more piece choke tube 4 that rubs directly can be connected
.
After packing 2 being loaded during installation blowout prevention box 3, logging cable 9 is passed pressure cap 1 and blowout prevention box 3.Again by polyurethane seal block 5 and cast iron briquetting 6 pair-wise combination, be arranged on the inside of the low choke tube 4 that rubs, now tighten blowout prevention box 3 and the low choke tube 4 that rubs, again tubing nipple 8 is arranged on well head, then logging cable 9 is penetrated, be connected logger again, be lowered in the oil pipe of production tree, all tighten and just can start construction.
In well logging, well inner high voltage can carry overflow and enter the low choke tube 4 that rubs by tubing nipple 8.Due to the upper top of well inner high voltage and the extruding of cast iron briquetting 6, can there is less distortion in polyurethane seal block 5, and to rub in choke tube 4 up, if use the low choke tube 4 that rubs of more piece to play sealing function low to block well liquid.Because cast iron briquetting 6 is not yielding, therefore can ensure that logging cable 9 is positioned at the center of the low choke tube 4 that rubs all the time, reduce the frictional force of logging cable 9 relative motion in the low choke tube 4 that rubs, protection cable, extend cable application life.Blowout prevention box 3 is installed in low choke tube 4 upper end of rubbing, and installs conventional well head sealing packing 2, play the effect of enhanced leaktightness in blowout prevention box 3.Meanwhile, when well head pressure is not high, blowout prevention box 3 directly can be connected with tubing nipple 8, be arranged on shaft mouth test, improve utilization rate of equipment and installations.Blowout prevention box 3 is installed pressure cap 1, can firm packing 2, its medium design through hole, ensures that logging cable 9 occupy the center of sealer.Tubing nipple 8 and low rubbing between choke tube 4 install sealing ring 7, can prevent the leakage of toxic gas and well liquid in well, ensure sealing effectiveness, improve security performance.
Claims (5)
1. Hi-pot test well low frictional resistance logging cable sealer, comprise pressure cap, the blowout prevention box of packing and tubing nipple are housed, pressure cap is installed on the top of blowout prevention box, it is characterized in that, between the bottom and tubing nipple of blowout prevention box, the low choke tube that rubs is housed, polyurethane sealing block and cast iron briquetting are housed in the low choke tube that rubs, and logging cable passes from pressure cap, blowout prevention box, low rub choke tube and tubing nipple.
2. Hi-pot test well according to claim 1 low frictional resistance logging cable sealer, it is characterized in that, the two ends of the described low choke tube that rubs are respectively equipped with external screw thread and internal thread, can be connected with blowout prevention box and tubing nipple, the lower lumen of the low choke tube that rubs is provided with every platform, and polyurethane sealing block and cast iron briquetting are alternately placed in the top inner chamber of platform.
3. Hi-pot test well according to claim 1 and 2 low frictional resistance logging cable sealer, is characterized in that, described polyurethane sealing block and cast iron briquetting are involutory semicircular body, and the internal diameter in involutory rear center hole conforms to the external diameter of logging cable.
4. Hi-pot test well according to claim 1 and 2 low frictional resistance logging cable sealer, is characterized in that, the connection of thread of described low rub choke tube and tubing nipple at least installs a sealing ring.
5. Hi-pot test well according to claim 1 and 2 low frictional resistance logging cable sealer, is characterized in that, the low choke tube that rubs of a joint is at least housed between the bottom and tubing nipple of blowout prevention box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448784.XU CN204040979U (en) | 2014-08-11 | 2014-08-11 | Hi-pot test well low frictional resistance logging cable sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420448784.XU CN204040979U (en) | 2014-08-11 | 2014-08-11 | Hi-pot test well low frictional resistance logging cable sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204040979U true CN204040979U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420448784.XU Expired - Fee Related CN204040979U (en) | 2014-08-11 | 2014-08-11 | Hi-pot test well low frictional resistance logging cable sealer |
Country Status (1)
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| CN (1) | CN204040979U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545242A (en) * | 2016-01-28 | 2016-05-04 | 沈阳工业大学通益科技有限公司 | High-temperature wellhead penetrator structure for electric submersible pump |
| CN105971543A (en) * | 2016-05-06 | 2016-09-28 | 中国地质大学（武汉） | Cable sealing device for wellhead of coalbed methane extraction well |
| CN106368645A (en) * | 2016-10-19 | 2017-02-01 | 克拉玛依天兴泰石油科技有限公司 | Construction method for lifting up and placing down SAGD well temperature measurement cable under pressure |
| CN109403952A (en) * | 2018-12-14 | 2019-03-01 | 东营职业学院 | The seperated cooperation test device of coiled tubing well logging |
| CN110821420A (en) * | 2019-10-16 | 2020-02-21 | 天津诚泽畅石油技术有限公司 | Underground optical fiber rope cap sealing device |
-
2014
- 2014-08-11 CN CN201420448784.XU patent/CN204040979U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545242A (en) * | 2016-01-28 | 2016-05-04 | 沈阳工业大学通益科技有限公司 | High-temperature wellhead penetrator structure for electric submersible pump |
| CN105971543A (en) * | 2016-05-06 | 2016-09-28 | 中国地质大学（武汉） | Cable sealing device for wellhead of coalbed methane extraction well |
| CN106368645A (en) * | 2016-10-19 | 2017-02-01 | 克拉玛依天兴泰石油科技有限公司 | Construction method for lifting up and placing down SAGD well temperature measurement cable under pressure |
| CN106368645B (en) * | 2016-10-19 | 2019-09-03 | 克拉玛依天兴泰石油科技有限公司 | SAGD well temperature measuring cable is with pressure to be mentioned, under construction method |
| CN109403952A (en) * | 2018-12-14 | 2019-03-01 | 东营职业学院 | The seperated cooperation test device of coiled tubing well logging |
| CN110821420A (en) * | 2019-10-16 | 2020-02-21 | 天津诚泽畅石油技术有限公司 | Underground optical fiber rope cap sealing device |
| CN110821420B (en) * | 2019-10-16 | 2021-04-06 | 天津诚泽畅石油技术有限公司 | Sealing structure for underground optical fiber rope cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20160811 |