CN102787840A - Multilayer static pressure measuring apparatus and measuring method - Google Patents
Multilayer static pressure measuring apparatus and measuring method Download PDFInfo
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- CN102787840A CN102787840A CN2012103233907A CN201210323390A CN102787840A CN 102787840 A CN102787840 A CN 102787840A CN 2012103233907 A CN2012103233907 A CN 2012103233907A CN 201210323390 A CN201210323390 A CN 201210323390A CN 102787840 A CN102787840 A CN 102787840A
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Abstract
The invention relates to a multilayer static pressure measuring apparatus and a measuring method. The multilayer static pressure measuring apparatus consists of a multiplayer static pressure measuring tubular column and a pressure measuring tool string which are not mutually connected, the multiplayer static pressure measuring tubular column is formed by the sequential threaded connections of an extension tube, a reverse circulation switch, a safety joint, a first hydraulic anchor, a Y341 packer, a first sliding sleeve switch, a second-stage location joint, a second hydraulic anchor, a Y241 packer, a second sliding sleeve switch, a first-stage location joint, a Y521 packer and a ball seat from top to bottom; and the pressure measuring tool string is formed by the sequential threaded connections of a steel wire with a rope socket at one end, a weight bar, a jar knocker, a universal joint, a blanking plug and an electronic manometer from top to bottom. In the construction process, the blanking plug and the electronic manometer in the pressure measuring tool string are located at the joint, the pressure of a fractured layer is measured after the fractured layer is completely sealed, the blanking plug and the electronic manometer are fished out, the data in the electronic manometer are subjected to playback, and the pressures of the corresponding layers are read. According to the multilayer static pressure measuring apparatus and the measuring method, the static pressure data of the single-layered ground layer can be reliably acquired.
Description
Technical field
The present invention relates to a kind of gas field and survey the device and the measuring method of static pressure, particularly a kind of multilayer is surveyed static pressure device and measuring method thereof.The invention belongs to natural gas exploration and development gas testing operation field.
Background technology
Most of gas reservoir in long celebrating gas field has many cover aerogenesis series of strata; And each layer all will pass through fracturing reform and could obtain production capacity; Traditional separate stratum fracfturing mode as: liquid gum plug, retrievable bridge plug or mechanical packer separate stratum fracfturing etc. are played in back-up sand, have long construction period, reservoir damage is serious or shortcoming such as operating expenses height.Independent research in 2005 oil gas well fixed tubular column separate stratum fracfturing instrument, realized the continuous dividing potential drop 2-5 layer of fixed tubular column, reached separate zone stimulation, combination producing, raising well yield purpose, effectively reduce reservoir damage and well control risk.But this technology can not be enrolled individual layer static pressure data, has caused very big difficulty for the formulation of producing dynamic prediction, The calculation of reserves, rational exploitation system in gas field exploration, the development process.
Summary of the invention
Close layer discharge opeing and ask the difficult problem that individual layer static pressure data can't be enrolled in the production. art in order to solve the separate stratum fracfturing of gas well fixed tubular column, the purpose of this invention is to provide a kind of multilayer and survey static pressure device and measuring method thereof, it can obtain individual layer stratum static pressure data reliably.
Technical scheme of the present invention is: multilayer is surveyed the static pressure device; It is characterized in that: it is to survey the static pressure tubing string by multilayer; The gaging pressure tool string is formed; They do not have annexation each other, described multilayer survey the static pressure tubing string be by telescoping tube, anti-cycling switch, safety joint, first hydraulic anchor, Y341 packer, first sliding sleeve switch, secondary be located joint, second hydraulic anchor, Y241 packer, second sliding sleeve switch, one-level be located joint, Y521 packer, ball seat from top to bottom successively order be threaded and form; Described gaging pressure tool string be have a rope socket by an end steel wire, weighted lever, bumper jar, universal joint, blanking plug, electronic pressure gauge from top to bottom order be threaded and form.
Described multilayer is surveyed static pressure Device Testing method and is comprised the steps: at least
During step 1. lower leaf fracturing string, connect the corresponding size multilayer according to design attitude and survey the static pressure tubing string;
After step 2. separate stratum fracfturing, close a layer discharge opeing;
Step 3. discharge opeing is closed well head oil jacket gate valve after finishing, and at this moment, Y521 packer and Y241 packer keep setting;
Step 4. connects lubricator, opens well head oil jacket gate valve;
Step 5. steel wire operation
(1) prepares the gaging pressure tool string;
(2) will go up gaging pressure tool string that a step prepares transfers to one-level and is located the joint; The jarring that faces down slip out of the hand; On mention the steel wire in the gaging pressure tool string, take out weighted lever, bumper jar, universal joint, blanking plug, electronic pressure gauge are stayed put to one-level and are located on the joint; Hit under the following intubate and slip out of the hand, with the complete packing of first fractured layer;
(3) prepare the gaging pressure tool string again;
(4) will go up gaging pressure tool string that a step prepares transfers to secondary and is located the joint; The jarring that faces down slip out of the hand; On mention the steel wire in the gaging pressure tool string, take out weighted lever, bumper jar, universal joint, blanking plug, electronic pressure gauge are stayed put to one-level and are located on the joint; Hit under the following intubate and slip out of the hand, with the complete packing of second fractured layer;
Step 6. is closed well head oil jacket gate valve, the lubricator of dismantling;
After step 7. observation well head oil jacket pressure recovers to stablize, connect lubricator, open well head oil jacket gate valve, following electronic pressure gauge is measured the barometric gradient and the middle part pressure of the 3rd fractured layer; Wherein, stable standard is that the well head oil jacket presses to rise and is no more than 0.02MPa in 72 hours;
Intubate and blanking plug fishing tool salvaging secondary is located blanking plug and electronic pressure gauge on the joint under step 8. steel wire, and the data in the playback electronic pressure gauge read the pressure of second fractured layer;
Intubate and blanking plug fishing tool salvaging one-level is located blanking plug and electronic pressure gauge on the joint under step 9. steel wire, and the data in the playback electronic pressure gauge read the pressure of first fractured layer.
Described electron pressure is counted memory electronic pressure gauge, will programme before memory electronic pressure gauge is gone into the well, and step-length is to get 1 point in per 1 minute, and the time of programming continuously is more than 20 days.
Described secondary is located joint and one-level and is located joint and is: the MX type is located joint.
The invention has the beneficial effects as follows:
1. multilayer separate pressure production time admission individual layer static pressure is for the gas field development evaluation provides PRESSURE DATA accurately and reliably;
2. in order to obtain individual layer stratum static pressure data; Need carry out individual layer gas testing operation and close the prospect pit that layer row adopts; Can directly carry out fixed tubular column separate stratum fracfturing technology or dividing potential drop and divide survey technology, reduce the number of times that makes a trip, reduce labour intensity; Have very big social benefit and economic benefit, popularizing application prospect is wide.
3. use and should technology accomplish 5 mouthfuls of well static pressure tests altogether, success rate reaches 100%.
4. secondary is located joint and one-level and is located joint and all adopts the MX type to be located joint. can reduce and reduce completion and gas testing cost; With oil pipe specification identical materials and size, can bear the maximum fluid rerum natura; Can be used for the standard type oil pipe; Various special button-types can be provided.
5. electronic pressure gauge adopts memory electronic pressure gauge, makes that the pressure and temperature range is wide, compact conformation, and stable performance has high accuracy, high-resolution, easy to use, advantage such as testing cost is low.
Technological principle of the present invention is:
Seat envelope before the packer pressure break, through oil jacket annular space packing gas-bearing formation, after pressure break finished to close layer discharge opeing, Y521 packer, Y241 packer still were in an envelope state.
Wellhead shut-in with the full blanking plug of oil pipe under the steel wire, separates gas-bearing formation through oil pipe, at this moment is in respectively in the environment of sealing between layer and the layer.The electronic pressure gauge that blanking plug carries is noted the stressor layer recovery situation respectively.
Pressure at first descends electronic pressure gauge to measure stratum, upper strata static pressure after recovering to stablize.Successively blanking plug is pulled out from top to bottom with steel wire then, the data read in the playback electronic pressure gauge is taken off the pressure data of two layers of face.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the present invention is done further explain, but not as to qualification of the present invention:
Fig. 1 is the structural representation that the multilayer of the embodiment of the invention is surveyed the static pressure tubing string;
Fig. 2 is the structural representation of the gaging pressure tool string of the embodiment of the invention;
Fig. 3 is the structural representation that the MX type is located joint.
Among the figure: 1, telescoping tube; 2, anti-cycling switch; 3, safety joint; 4, first hydraulic anchor; 5, Y341 packer; 6, the 3rd fractured layer; 7, first sliding sleeve switch; 8, secondary is located joint; 9, second hydraulic anchor; 10, Y241 packer; 11, second fractured layer; 12, second sliding sleeve switch; 13, one-level is located joint; 14, Y521 packer; 15, ball seat; 16, first fractured layer; 17, steel wire; 18, weighted lever; 19, bumper jar; 20, universal joint; 21, blanking plug; 22, electronic pressure gauge.
The specific embodiment
Embodiment 1
Multilayer is surveyed the static pressure device; It is to survey the static pressure tubing string by multilayer; The gaging pressure tool string is formed; They do not have annexation each other; As shown in Figure 1, described multilayer survey the static pressure tubing string be by telescoping tube 1, anti-cycling switch 2, safety joint 3, first hydraulic anchor 4, Y341 packer 5, first sliding sleeve switch 7, secondary be located joint 8, second hydraulic anchor 9, Y241 packer 10, second sliding sleeve switch 12, one-level be located joint 13, Y521 packer 14, ball seat 15 from top to bottom successively order be threaded and form; Shown in Figure 2, described gaging pressure tool string be have a rope socket by an end steel wire 17, weighted lever 18, bumper jar 19, universal joint 20, blanking plug 21, electronic pressure gauge 22 from top to bottom order be threaded and form.
Embodiment 2
Multilayer is surveyed static pressure Device Testing method and is comprised the steps: at least
During step 1. lower leaf fracturing string, connect the corresponding size multilayer according to design attitude and survey static pressure tubing string (see figure 1); That is: with telescoping tube 1, anti-cycling switch 2, safety joint 3, first hydraulic anchor 4, Y341 packer 5, first sliding sleeve switch 7, secondary be located joint 8, second hydraulic anchor 9, Y241 packer 10, second sliding sleeve switch 12, one-level be located joint 13, Y521 packer 14, ball seat 15 from top to bottom successively order be threaded and form multilayer and survey the static pressure tubing string.
After step 2. separate stratum fracfturing, the open flow that drives a well gets into the fracturing fluid in the stratum when discharging pressure break.
Step 3. discharge opeing is closed well head oil jacket gate valve after finishing, and at this moment, Y521 packer 14 keeps setting with Y241 packer 10;
Step 4. connects lubricator, opens well head oil jacket gate valve;
Step 5. steel wire operation
(1) prepares gaging pressure tool string (see figure 2); That is: the steel wire 17, weighted lever 18, bumper jar 19, universal joint 20, blanking plug 21, electronic pressure gauge 22 that an end is had rope socket order from top to bottom is threaded and forms the gaging pressure tool string; Wherein an end of weighted lever 18 is threaded with steel wire 17 through rope socket, and rope socket is an end that is fixedly connected on steel wire 17.
(2) will go up gaging pressure tool string that a step prepares transfers to one-level and is located joint 13 places; The jarring that faces down slip out of the hand; On mention the steel wire 17 in the gaging pressure tool string; Take out weighted lever 18, bumper jar 19, universal joint 20, blanking plug 21, electronic pressure gauge 22 are stayed put to one-level and be located on the joint 13; Hit under the following intubate and slip out of the hand, with the 16 complete packings of first fractured layer;
(3) prepare the gaging pressure tool string again;
(4) will go up gaging pressure tool string that a step prepares transfers to secondary and is located joint 8 places; The jarring that faces down slip out of the hand; On mention the steel wire 17 in the gaging pressure tool string; Take out weighted lever 18, bumper jar 19, universal joint 20, blanking plug 21, electronic pressure gauge 22 are stayed put to one-level and be located on the joint 13; Hit under the following intubate and slip out of the hand, with the 11 complete packings of second fractured layer;
Step 6. is closed well head oil jacket gate valve, the lubricator of dismantling.
After step 7. observation well head oil jacket pressure recovers to stablize, connect lubricator, open well head oil jacket gate valve, following electronic pressure gauge 22 is measured the barometric gradient and the middle part pressure of the 3rd fractured layer 6; Wherein, stable standard is that the well head oil jacket presses to rise and is no more than 0.02MPa in 72 hours; Barometric gradient is a longshore current body flow direction, and the pressure on the unit path length changes.Available delta form △ P/ △ L or differential form dP/dL represent that P is a pressure in the formula; L is a distance.Here be to count from ground, the increment of pressure during the every increase unit depth of stratum vertical depth.
Intubate and blanking plug fishing tool salvaging secondary is located blanking plug 21 and electronic pressure gauge 22 on the joint 8 under step 8. steel wire, and the data in the playback electronic pressure gauge 22 read the pressure of second fractured layer 11;
Intubate and blanking plug fishing tool salvaging one-level is located blanking plug 21 and electronic pressure gauge 22 on the joint 13 under step 9. steel wire, and the data in the playback electronic pressure gauge 22 read the pressure of first fractured layer 16.
Described blanking plug 21 is calkers in a kind of oil pipe, and is totally-enclosed to realizing in the following oil pipe in its present position, reaches the purpose of zonal testing;
Described electronic pressure gauge 22 is a memory electronic pressure gauge, will programme before memory electronic pressure gauge is gone into the well, and step-length is to get 1 point in per 1 minute, and the time of programming continuously is more than 20 days.
As shown in Figure 3, described secondary is located joint 8 and is located joint 13 with one-level and is: the MX type is located joint.
Embodiment 3
Organize YT1 well KL in December, 2011: after 4040.0-4045.0m, 4083.0-4085.0m, three sections acidifying discharge opeings of 4123.0-4125.0m finish, carried out the delaminating pressure testing operation.
Construction sequence
(1) during the lower leaf fracturing string, connects the corresponding size multilayer according to design attitude and survey the static pressure tubing string;
(2) 4040.0-4045.0m, 4083.0-4085.0m, 4123.0-4125.0m are carried out for three sections closing a layer discharge opeing after the separate layer acid treatment;
(3) after discharge opeing finishes, close well head oil jacket gate valve;
(4) connect lubricator; Open the oil jacket gate valve;
(5) connect gaging pressure tool string (see figure 2); The gaging pressure tool string is transferred to 4124m be hampered (one-level is located joint 13 places); The jarring that faces down slip out of the hand, on mention the steel wire 17 in the gaging pressure tool string, take out weighted lever 18, bumper jar 19, universal joint 20; The inspection blanking plug is successfully slipped out of the hand, and blanking plug 21, electronic pressure gauge 22 is stayed put to one-level to be located on the joint 13; Hit under the following intubate and slip out of the hand, with the complete packing of group 4123.0-4125.0m in the successful shutoff Ke Limo;
(6) prepare the gaging pressure tool string again;
(7) will go up gaging pressure tool string that a step prepares transfers to 4084m be hampered (secondary is located joint 8 places); The jarring that faces down slip out of the hand; On mention the steel wire 17 in the gaging pressure tool string; Take out weighted lever 18, bumper jar 19, universal joint 20, the inspection blanking plug is successfully slipped out of the hand, and blanking plug 21, electronic pressure gauge 22 is stayed put to secondary to be located on the joint 8; Hit under the following intubate and slip out of the hand, with the complete packing of group 4083.0-4085.0m in the successful shutoff Ke Limo;
(8) close well head oil jacket gate valve, the lubricator of dismantling, the well head oil pressure rises to 12.4MPa by 0, and casing pressure rises to 12.5MPa by 3.7MPa, and it is stable that pressure recovers;
(9) lubricator is installed, is opened well head oil jacket gate valve.To 4042m, survey 4040.0-4045.0m section stratum static pressure with electronic pressure gauge under the steel wire, trip out the electronic pressure gauge playback of data, the static pressure that obtains this layer is 16.5MPa;
(10) intubate and blanking plug fishing tool salvaging secondary is located blanking plug 21 and electronic pressure gauge 22 on the joint 8 under the steel wire; 4084m is hampered; On propose inspection; Drag for and obtain secondary and be located blanking plug 21 and electronic pressure gauge 22 on the joint 8, the data in the playback electronic pressure gauge, the stratum static pressure that reads the 4083.0-4085.0m section is 17.2MPa.
(11) intubate and blanking plug fishing tool salvaging one-level is located blanking plug 21 and electronic pressure gauge 22 on the joint 13 under the steel wire; 4124m is hampered; On propose inspection; Drag for and obtain one-level and be located blanking plug 21 and electronic pressure gauge 22 on the joint 13, the data in the playback electronic pressure gauge, the stratum static pressure that reads the 4123.0-4125.0m section is 18.8MPa.
Described electronic pressure gauge 22 is a memory electronic pressure gauge, will programme before memory electronic pressure gauge is gone into the well, and step-length is to get 1 point in per 1 minute, and the time of programming continuously is more than 20 days.
Use this technology of the present invention and accomplish 5 mouthfuls of well static pressure tests altogether, success rate reaches 100%.
Parts that present embodiment is not described in detail and structure belong to well-known components and the common structure or the conventional means of the industry, here not narration one by one.
Claims (4)
1. multilayer is surveyed the static pressure device; It is characterized in that: it is to survey the static pressure tubing string by multilayer; The gaging pressure tool string is formed; They do not have annexation each other, described multilayer survey the static pressure tubing string be by telescoping tube (1), anti-cycling switch (2), safety joint (3), first hydraulic anchor (4), Y341 packer (5), first sliding sleeve switch (7), secondary be located joint (8), second hydraulic anchor (9), Y241 packer (10), second sliding sleeve switch (12), one-level be located joint (13), Y521 packer (14), ball seat (15) from top to bottom successively order be threaded and form; Described gaging pressure tool string be have a rope socket by an end steel wire (17), weighted lever (18), bumper jar (19), universal joint (20), blanking plug (21), electronic pressure gauge (22) from top to bottom order be threaded and form.
2. multilayer according to claim 1 is surveyed the static pressure device, it is characterized in that: described multilayer is surveyed static pressure Device Testing method and is comprised the steps: at least
During step 1. lower leaf fracturing string, connect the corresponding size multilayer according to design attitude and survey the static pressure tubing string;
After step 2. separate stratum fracfturing, close a layer discharge opeing;
Step 3. discharge opeing is closed well head oil jacket gate valve after finishing, and at this moment, Y521 packer (14) and Y241 packer (10) keep setting;
Step 4. connects lubricator, opens well head oil jacket gate valve;
Step 5. steel wire operation
(1) prepares the gaging pressure tool string;
(2) will go up gaging pressure tool string that a step prepares transfers and is located joint (13) to one-level and locates; The jarring that faces down slip out of the hand; On mention the steel wire (17) in the gaging pressure tool string; Take out weighted lever (18), bumper jar (19), universal joint (20), blanking plug (21), electronic pressure gauge (22) are stayed put to one-level and be located on the joint (13); Hit under the following intubate and slip out of the hand, with first fractured layer (16) packing fully;
(3) prepare the gaging pressure tool string again;
(4) will go up gaging pressure tool string that a step prepares transfers and is located joint (8) to secondary and locates; The jarring that faces down slip out of the hand; On mention the steel wire (17) in the gaging pressure tool string; Take out weighted lever (18), bumper jar (19), universal joint (20), blanking plug (21), electronic pressure gauge (22) are stayed put to one-level and be located on the joint (13); Hit under the following intubate and slip out of the hand, with second fractured layer (11) packing fully;
Step 6. is closed well head oil jacket gate valve, the lubricator of dismantling;
After step 7. observation well head oil jacket pressure recovers to stablize, connect lubricator, open well head oil jacket gate valve, following electronic pressure gauge (22) is measured the barometric gradient and the middle part pressure of the 3rd fractured layer (6); Wherein, stable standard is that the well head oil jacket presses to rise and is no more than 0.02MPa in 72 hours;
Intubate and blanking plug fishing tool salvaging secondary is located blanking plug (21) and electronic pressure gauge (22) on the joint (8) under step 8. steel wire, and the data in the playback electronic pressure gauge (22) read the pressure of second fractured layer (11);
Intubate and blanking plug fishing tool salvaging one-level is located blanking plug (21) and electronic pressure gauge (22) on the joint (13) under step 9. steel wire, and the data in the playback electronic pressure gauge (22) read the pressure of first fractured layer (16).
3. multilayer according to claim 1 and 2 is surveyed the static pressure device; It is characterized in that: described electronic pressure gauge (22) is a memory electronic pressure gauge; Will programme before memory electronic pressure gauge is gone into the well, step-length is to get 1 point in per 1 minute, and the time of programming continuously is more than 20 days.
4. multilayer according to claim 1 and 2 is surveyed the static pressure device, it is characterized in that: described secondary is located joint (8) and one-level and is located joint (13) and is: the MX type is located joint.
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| CN201210323390.7A CN102787840B (en) | 2012-09-05 | 2012-09-05 | Measuring method of multilayer static pressure measuring apparatus |
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| CN103306655A (en) * | 2013-05-29 | 2013-09-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Staged fracturing method adopting under-pressure dragging |
| CN103590813A (en) * | 2013-10-30 | 2014-02-19 | 中国石油天然气股份有限公司 | Method, tubular column and device for testing dynamic reserves of two-layer commingled producing gas well |
| CN106321037A (en) * | 2016-09-12 | 2017-01-11 | 中国海洋石油总公司 | Method for monitoring displacement effect and pollution radius of polymer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103306655A (en) * | 2013-05-29 | 2013-09-18 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Staged fracturing method adopting under-pressure dragging |
| CN103306655B (en) * | 2013-05-29 | 2016-01-20 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of dragging staged fracturing method with pressure |
| CN103590813A (en) * | 2013-10-30 | 2014-02-19 | 中国石油天然气股份有限公司 | Method, tubular column and device for testing dynamic reserves of two-layer commingled producing gas well |
| CN103590813B (en) * | 2013-10-30 | 2016-08-17 | 中国石油天然气股份有限公司 | The method of testing of double layer commingled production Estimation of Gas Well Dynamic Reserves, test string and test device |
| CN106321037A (en) * | 2016-09-12 | 2017-01-11 | 中国海洋石油总公司 | Method for monitoring displacement effect and pollution radius of polymer |
| CN106321037B (en) * | 2016-09-12 | 2019-03-08 | 中国海洋石油集团有限公司 | A kind of method of monitoring polymer Flooding Efficiency and pollution radius |
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| Publication number | Publication date |
|---|---|
| CN102787840B (en) | 2015-04-22 |
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