CN1734053A - Down-hole sand control apparatus - Google Patents
Down-hole sand control apparatus Download PDFInfo
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- CN1734053A CN1734053A CN 200410058325 CN200410058325A CN1734053A CN 1734053 A CN1734053 A CN 1734053A CN 200410058325 CN200410058325 CN 200410058325 CN 200410058325 A CN200410058325 A CN 200410058325A CN 1734053 A CN1734053 A CN 1734053A
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- sand control
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- sand
- sealing ring
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Abstract
A phreatic sand preventing device relates to phreatic tool, wherein the abrasive blasting won't drilling rod blocking with sand when the water under high pressure jets to the radial horizontal drill, this invention is to solve the technique problem, which is that the abrasive blasting sinking in the bottom of the redirector lead to the drilling rod blocking; this device is composed of the fluid cylinder (1), the sand preventing roller (2), wherein the upper part of the cylinder (1) connects with the vitta pole, and the under part of the cylinder (1) connects with the inner filter (7) of the redirector, and the upper part of the roller(2) connects with sucker rod, and the under part of the roller (2)connects with the connector of the drilling rod (5), and the sand preventing channel(I) in the roller (2) has the grid (10) and communicates with the liquid cylinder loop cavity (13) on the sealing ring suit (4) and the surrounding water cavity (20) under the sealing ring suit (4), and the channel (I) makes the sanding leave in the loop cavity (13)but not sink in the bottom sealing (8), and it makes the surrounding water cavity (20) flow into the loop cavity (13) but not block the roller (2) going down, and the sanding channel (II) in the roller (2) makes the abrasive blast liquid in the loop cavity (13) flow in the drilling rod (6) and the drilling rig to do drilling by jet.
Description
Technical field
The present invention relates to a kind of oil gas well downhole tool, particularly be applicable to guarantee when adopting abradant jet technology in the high-pressure water jet radial horizontal drilling process that high-pressure water jet radial horizontal drilling system normally send the brill trip-out and is not subjected to the necessary down-hole of sand card sand control installation.
Background technology
In the oil exploitation operation at present, high-pressure water jet radial horizontal drilling technology is to improve the important front edge technology of oil well productivity, and China is in the industry trial period at present.In U.S. Pat 4497381A, US4763734A and BP GB2124278A and Chinese patent ZL03239019x, introduced the correlation technique principle.Roughly operation is that the radial horizontal drilling instrument is lowered in the peupendicular hole that has the sixth of the twelve Earthly Branches, and steering gear is holded up in the cavity at the casing reamer section place, well depth position of preparation in early stage, enters duty, utilizes high-pressure water jet and hydraulic drive technology to realize drill-well operation then.Yet, in the concrete operations that relate to high-pressure water jet and hydraulic drive technology realization drilling well, after whole system adopts abradant jet technology, the jet abrasive material can sink to the bottom sealing of steering gear in a large number, cause the bottom sealing that drilling rod is produced the sand card, how to solve this technical problem, these documents are not all set forth its solution.In fact, after high-pressure water jet radial horizontal drilling system adopts jet technology, how to prevent that the bottom sealing from producing the sand card to drilling rod, guarantee that it is particularly important link in the high-pressure water jet radial horizontal drilling technology that sending of whole system bored finishing drilling unaffected.Present prior art is a blank out, also needs to develop a kind of down-hole sand control installation, and high-pressure water jet radial horizontal drilling system normally send brill to spray, pulling out of hole is not subjected to the sand card that reliable assurance is provided in order to finish.
Summary of the invention
Goal of the invention of the present invention is to develop a kind of down-hole sand control installation, after solving high-pressure water jet radial horizontal drilling system employing abradant jet technology, the bottom sealing that the jet abrasive material sinks to steering gear causes bottom sealing sand setting and drilling rod is produced jam, sends this technical problem to thereby influence drilling rod.
Goal of the invention of the present invention is according to fluid cylinder-piston principle, by the sand control runner do not make the sealing of steering gear bottom produce sand setting being set on piston and the abrasive material passage of abradant jet liquid being provided for drilling rod and drill bit, develop that a kind of technical scheme of the down-hole sand control installation that is made of fluid cylinder and sand control piston realizes, concrete scheme is as follows:
The present invention is made of fluid cylinder and sand control piston, and the fluid cylinder upper end is connected with the lower end with tubing string and is connected with the steering gear inner core, and the piston upper end is connected with the lower end with rod string and is connected with tool joint, and piston available rod string in fluid cylinder is sent to and promoted; The joint ring group of piston is installed in the body hypomere of piston, have two fluid courses of isolating mutually in the body, the outlet of sand control runner and inlet are respectively under the joint ring group of the epimere of body and hypomere, be embedded with filter screen outside on the body at sand control runner exit place, the entrance and exit of abrasive material runner is respectively in the stage casing of body and the lower end of body; Abrasive material intercepts and can not enter tired water cavity through sand control runner exit place filter screen in the abradant jet liquid in the fluid cylinder ring cavity, abradant jet liquid in the fluid cylinder ring cavity can enter drilling rod and drill bit through abrasive material runner entrance and exit and through tool joint, to carry out the jet drilling of radially horizontal well.
The upper and lower end of fluid cylinder of the present invention has external screw thread, and its upper end is connected with oil string thread, and its hypomere is threaded with the steering gear inner core.
Sand control piston of the present invention is made up of body, filter screen, joint ring group and tool joint.
The body of sand control piston has the cylinder of distance piece for top, stage casing, by its external diameter from top to bottom, ascending three sections of the upper, middle and lower that are divided into, its upper end has screw thread such as internal thread being threaded with rod string, and its lower end has screw thread such as external screw thread to be connected with tool joint thread; Have two fluid courses of isolating mutually in the body, the sand control runner is made of upper shell centre bore and lower shell side opening, the outlet of this runner on the external cylindrical surface of upper shell and the inlet on the external cylindrical surface of lower shell bottom, the abrasive material runner is the lower shell centre bore, and the inlet of this runner is the lower port of lower shell centre bore with outlet on the side plane in cylinder stage casing; Has external screw thread on the external cylindrical surface of body hypomere so that the joint ring group to be installed.
The filter screen of sand control piston is the wire lath of aperture less than the jet abrasive size, and its outer embedding is installed in the exit of the sand control runner on the upper shell external cylindrical surface.
The joint ring group of sand control piston is made up of upper sealing ring, sealing shroud, lower sealing ring and clamping sleeve; Upper sealing ring is nonmetals such as polytetrafluoroethylene (PTFE), has the sand setting groove on its external cylindrical surface; The sealing shroud epimere has the step of suit upper sealing ring, has the sand setting groove on its hypomere external cylindrical surface, and its endoporus has internal thread; Lower sealing ring is nonmetals such as polytetrafluoroethylene (PTFE), has the sand setting groove on its external cylindrical surface, and its internal diameter is bigger slightly than body hypomere external diameter; The clamping sleeve endoporus has internal thread, and its side has the stop bit pin-and-hole; Upper sealing ring is sleeved on the sealing shroud epimere step, and sealing shroud is installed on the body by screw thread, and lower sealing ring is sleeved on the body, and clamping sleeve is installed on the body by screw thread and fixing pin.
The tool joint upper end of sand control piston has internal thread to be threaded its lower end endoporus and drilling rod welding with the body lower end.
The present invention is delivered to the sand control piston in the fluid cylinder by rod string when going into the well, and the fluid power of high pressure drilling liquid driving sand control piston and drilling rod move downward when abradant jet creeps into; The sand control runner has two functions, promptly intercepts abrasive material and enters to be stranded water cavity and to allow and be stranded tired water in the water cavity and upwards flow into the fluid cylinder ring cavity and be unlikely the incompressible sand control descent of piston that hinders because of tired water; Oriented drilling rod of abrasive flows stage property and drill bit provide the function of abradant jet liquid to guarantee that radial horizontal drilling needs; Evidence, modern design of the present invention, simple and reasonable for structure, performance safety, reliable, effect is remarkable, and after high-pressure water jet radial horizontal drilling system employing abradant jet technology, the bottom of successfully having avoided the jet abrasive material to sink to steering gear in a large number seals and causes the bottom sealing drilling rod to be produced the possibility of sand card, provide reliable assurance for carrying out the horizontal drilling jeting process, satisfied the needs of high-pressure water jet radial horizontal drilling satisfactorily.
Description of drawings
Fig. 1 is the structural representation under the present invention in working order;
Fig. 2 is a sand control piston only of the present invention stage casing cross section view.
The specific embodiment
Summary of the invention of the present invention further is described as follows in detail by the following examples and accompanying drawing thereof:
With reference to Fig. 1, the present invention is made of fluid cylinder (1) and sand control piston (2), and fluid cylinder (1) upper end is connected with the lower end with tubing string and is connected with steering gear inner core (7); Piston (2) upper end is connected with the lower end with rod string and is connected with tool joint (5), and piston (2) available rod string in fluid cylinder (1) is sent to and promoted; The joint ring group (4) of piston (2) is installed in body (3) hypomere of piston (2), have two fluid courses (I, II) of isolating mutually in the body (3), the outlet (9) of sand control runner (I) and inlet (18) are respectively under the joint ring group (4) of the epimere of body (3) and hypomere, be embedded with filter screen (10) outside the body (3) that sand control runner (I) outlet (9) is located is gone up, the inlet (12) of abrasive material runner (II) and outlet (19) are respectively in the stage casing of body (3) and the lower end of body (3); Abrasive material is located filter screen (10) obstruct and can not be entered tired water cavity (20) through sand control runner (I) outlet (9) in the abradant jet liquid in the fluid cylinder ring cavity (13), abradant jet liquid in the fluid cylinder ring cavity (13) can and export (19) and enter drilling rod (6) and drill bit through tool joint (5) through abrasive material runner (II) inlet (12), to carry out the jet drilling of radially horizontal well.
With reference to Fig. 1, fluid cylinder (1) upper and lower end has external screw thread, and its upper end is connected with oil string thread, and its lower end is threaded with steering gear inner core (7).
With reference to Fig. 1, sand control piston (2) is made up of body (3), filter screen (10), joint ring group (4) and tool joint (5).
Body (3) has the cylinder of distance piece (11) for top, stage casing, by its external diameter from top to bottom, ascending three sections of the upper, middle and lower that are divided into, its upper end has screw thread such as internal thread being threaded with rod string, and its lower end has screw thread such as external screw thread to be threaded with tool joint (5); Have two fluid courses (I, II) of isolating mutually in the body (3), sand control runner (I) is made of upper shell centre bore and lower shell side opening, the outlet (9) of this runner (I) on the external cylindrical surface of upper shell and the inlet (18) on the external cylindrical surface of lower shell bottom, abrasive material runner (II) is the lower shell centre bore, the inlet (12) of this runner (II) on the side plane in cylinder stage casing and the outlet (19) be the lower port of lower shell centre bore; Has external screw thread on the external cylindrical surface of body (3) hypomere so that joint ring group (4) to be installed; With reference to Fig. 2,, can locate to be processed with 2 flat sides at the inlet (12) of body (3) stage casing abrasive material passage (II) for easy for installation.
Filter screen (10) is the wire lath of aperture less than the jet abrasive size, and sand control runner (I) outlet (9) that its outer embedding is installed on the upper shell external cylindrical surface is located.
Joint ring group (4) is made up of upper sealing ring (14), sealing shroud (15), lower sealing ring (16) and clamping sleeve (17); Upper sealing ring (14) is nonmetals such as polytetrafluoroethylene (PTFE), has the sand setting groove on its external cylindrical surface; Sealing shroud (15) epimere has the step of suit upper sealing ring (14), has the sand setting groove on its hypomere external cylindrical surface, and its endoporus has internal thread; Lower sealing ring (16) is nonmetals such as polytetrafluoroethylene (PTFE), has the sand setting groove on its external cylindrical surface, and its internal diameter is bigger slightly than body (3) hypomere external diameter; Clamping sleeve (17) endoporus has internal thread, and its side has the stop bit pin-and-hole; Upper sealing ring (14) is sleeved on sealing shroud (15) the epimere step, and sealing shroud (15) is installed on the body (3) by screw thread, and lower sealing ring (16) is sleeved on the body (3), and clamping sleeve (17) is installed on the body (3) by screw thread and fixing pin.
Tool joint (5) upper end has internal thread to be threaded its lower end endoporus and drilling rod (6) welding with body (3) lower end.
Operation process of the present invention is as follows: with the radial horizontal drilling feeding system sand control piston (2) is sent into fluid cylinder (1), behind the arrival precalculated position, the abradant jet drilling well begins; The fluid power driven plunger (2) and the drilling rod (6) of high-pressure spray drilling fluid move downward, abrasive material in the drilling fluid is intercepted and stays in the fluid cylinder ring cavity (13) by filter screen (10) in the sand control runner (I), and the abrasive material drilling fluid under high pressure enters drilling rod (6) inner chamber by abrasive material runner (II) rapidly and carries out normal jet drilling well; Because piston (2) moves downward, the tired hydrospace of its underpart dwindles gradually, the tired water that is stranded in the water cavity (20) can enter fluid cylinder ring cavity (13) by sand control runner (I) through filter screen (10) at leisure, nos abrasive material is entered and reach the sand control purpose, be stranded in the water cavity (20) that tired water can not influence piston (2) and drilling rod (5) moves downward yet.
Claims (7)
1. down-hole sand control installation, it is characterized in that having fluid cylinder (1) and sand control piston (2); Fluid cylinder (1) upper end is connected with the lower end with tubing string and is connected with steering gear inner core (7); Piston (2) upper end is connected with the lower end with rod string and is connected with tool joint (5), and piston (2) available rod string in fluid cylinder (1) is sent to and promoted; The joint ring group (4) of piston (2) is installed in body (3) hypomere of piston (2), have two fluid courses (I, II) of isolating mutually in the body (3), the outlet (9) of sand control runner (I) and inlet (18) are respectively under the joint ring group (4) of the epimere of body (3) and hypomere, be embedded with filter screen (10) outside the body (3) that sand control runner (I) outlet (9) is located is gone up, the inlet (12) of abrasive material runner (II) and outlet (19) are respectively in the stage casing of body (3) and the lower end of body (3); Abrasive material is located filter screen (10) obstruct and can not be entered tired water cavity (20) through sand control runner (I) outlet (9) in the abradant jet liquid in the fluid cylinder ring cavity (13), abradant jet liquid in the fluid cylinder ring cavity (13) can and export (19) and enter drilling rod (6) and drill bit through tool joint (5) through abrasive material runner (II) inlet (12), to carry out the jet drilling of radially horizontal well.
2. according to the described device of claim 1, it is characterized in that fluid cylinder (1) upper and lower end has external screw thread, its upper end is connected with oil string thread, and its lower end is threaded with steering gear inner core (7).
3. according to the described device of claim 1, it is characterized in that sand control piston (2) is made up of body (3), filter screen (10), joint ring group (4) and tool joint (5).
4. according to the described device of claim 1, it is characterized in that the body (3) of sand control piston (2) has the cylinder of distance piece (11) for top, stage casing, by its external diameter from top to bottom, ascending three sections of the upper, middle and lower that are divided into, its upper end has screw thread such as internal thread being threaded with rod string, and its lower end has screw thread such as external screw thread to be connected with tool joint (5); Have two fluid courses (I, II) of isolating mutually in the body (3), sand control runner (I) is made of upper shell centre bore and lower shell side opening, the outlet (9) of this runner (I) on the external cylindrical surface of upper shell and the inlet (18) on the external cylindrical surface of lower shell bottom, abrasive material runner (II) is the lower shell centre bore, the inlet (12) of this runner (II) on the side plane in cylinder stage casing and the outlet (19) be the lower port of lower shell centre bore; Has external screw thread on the external cylindrical surface of body (3) hypomere so that joint ring group (4) to be installed.
5. according to the described device of claim 1, it is characterized in that the filter screen (10) of sand control piston (2) is the wire lath of aperture less than the jet abrasive size, sand control runner (I) outlet (9) that its outer embedding is installed on the upper shell external cylindrical surface is located.
6. according to the described device of claim 1, it is characterized in that the joint ring group (4) of sand control piston (2) is made up of upper sealing ring (14), sealing shroud (15), lower sealing ring (16) and clamping sleeve (17); Upper sealing ring (14) is nonmetals such as polytetrafluoroethylene (PTFE), has the sand setting groove on its external cylindrical surface; Sealing shroud (15) epimere has the step of suit upper sealing ring (14), has the sand setting groove on its hypomere external cylindrical surface, and its endoporus has internal thread; Lower sealing ring (16) is nonmetals such as polytetrafluoroethylene (PTFE), has the sand setting groove on its external cylindrical surface, and its internal diameter is bigger slightly than body (3) hypomere external diameter; Clamping sleeve (17) endoporus has internal thread, and its side has the stop bit pin-and-hole; Upper sealing ring (14) is sleeved on sealing shroud (15) the epimere step, and sealing shroud (15) is installed on the body (3) by screw thread, and lower sealing ring (16) is sleeved on the body (3), and clamping sleeve (17) is installed on the body (3) by screw thread and fixing pin.
7. according to the described device of claim 1, it is characterized in that tool joint (5) upper end of sand control piston (2) has internal thread to be threaded its lower end endoporus and drilling rod (6) welding with body (3) lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410058325 CN1734053A (en) | 2004-08-12 | 2004-08-12 | Down-hole sand control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410058325 CN1734053A (en) | 2004-08-12 | 2004-08-12 | Down-hole sand control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1734053A true CN1734053A (en) | 2006-02-15 |
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ID=36076638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410058325 Pending CN1734053A (en) | 2004-08-12 | 2004-08-12 | Down-hole sand control apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN1734053A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782247A (en) * | 2010-01-20 | 2012-11-14 | 威尔博尔能量产品有限公司 | Wellbore knock-out chamber and related methods of use |
| CN106285536A (en) * | 2015-06-04 | 2017-01-04 | 中国石油天然气股份有限公司 | Sand control installation |
-
2004
- 2004-08-12 CN CN 200410058325 patent/CN1734053A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102782247A (en) * | 2010-01-20 | 2012-11-14 | 威尔博尔能量产品有限公司 | Wellbore knock-out chamber and related methods of use |
| CN106285536A (en) * | 2015-06-04 | 2017-01-04 | 中国石油天然气股份有限公司 | Sand control installation |
| CN106285536B (en) * | 2015-06-04 | 2018-11-16 | 中国石油天然气股份有限公司 | Sand control installation |
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