CN101476455A - Filling water-control sieve tube and its laying method - Google Patents
Filling water-control sieve tube and its laying method Download PDFInfo
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- CN101476455A CN101476455A CNA2008100556799A CN200810055679A CN101476455A CN 101476455 A CN101476455 A CN 101476455A CN A2008100556799 A CNA2008100556799 A CN A2008100556799A CN 200810055679 A CN200810055679 A CN 200810055679A CN 101476455 A CN101476455 A CN 101476455A
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Abstract
The invention relates to a filling water controlling sieve tube and a distributing method thereof. The filling water controlling sieve tube comprises a base tube which is provided with at least one filter sleeve; a stream guide layer which makes fluid flow axially is formed between the inner surface of the filter sleeve and the outer surface of the base tube, and the base tube is also provided with a filling water controlling valve which is set into a large pore cannel state with large flow passing ability when filling solid particles and a small pore canal state with flow control capability after filling the solid particles. The distributing method comprises the following: distributing the filling water controlling sieve tube at the production position of an oil gas well; filling the solid particles between the filling water controlling sieve tube and the well wall; and setting the filling water controlling valve on the filling water controlling sieve tube into the small pore canal state. The sieve tube has a simple structure and simple construction process, can be widely applied to oil gas field production and an injection well, particularly a horizontal well, effectively delay or reduce a large amount of water outlet of the oil gas well, improve the daily output of the oil gas well, save labor force and financial resources, and reduce environment pollution.
Description
Technical field
The present invention relates to water-control sieve tube and distribution method thereof that oil well, gas well and water injection well in a kind of oil and gas exploitation (hereinafter to be referred as the oil gas well) uses, particularly a kind of Fillable Water Control Sieve and distribution method thereof.
Background technology
In oil and gas exploitation, production sections of oil and gas wells is long, and particularly horizontal well is produced the segment length and reached 200 meters～800 meters or longer.In process of production, because aspects such as oil field geologic and fluids, many oil gas wells will exist the part to go out water problems after producing a period of time.The local water outlet of oil gas well makes oil gas well daily output sharply descend on the one hand, and income is subjected to very big influence; A large amount of on the other hand output water need to handle the waste of manpower financial resources.
For addressing the above problem, prior art has proposed that a kind of (water-control sieve tube is the strainer that is provided with flow control device in a kind of at water-control sieve tube, screen casing also claims anti-sandpipe), and the filling solid particle solves the scheme of water rate outside water-control sieve tube, by filling solid particle between the water-control sieve tube and the borehole wall, make to form the pore media ring between the water-control sieve tube and the borehole wall, the pore media ring plays the axial isolation effect outside water-control sieve tube, can reduce the water that enters water-control sieve tube greatly in conjunction with water-control sieve tube.Its specific practice is: after the drilling well, in well, place water-control sieve tube, fill the annular space between the water-control sieve tube and the borehole wall after the packing fluid that filling solid particle between the water-control sieve tube and the borehole wall afterwards, solid particle wait to carry solid particle is filtered away, formed the pore media ring that forms by solid particle.In order to guarantee the solid particle filling, the mortar that charges into need reach critical speed, needs greater than 1m as flow
3/ s, otherwise can not overcome the precipitation of solid particle in flow process, can't filling.
The effect of water-control sieve tube is to control the flow that water enters screen casing and reach the control water yield, reduce moisture content, improve the rate of oil and gas recovery by the interior flow control device of establishing.Water-control sieve tube has two types at present: throttle-type and switching mode, throttle-type water-control sieve tube are that throttling arrangement is set on screen casing, and the water of the big flow of restriction enters screen casing; The switching mode water-control sieve tube allows the flow that passes through also very limited.Therefore the flow that can pass through on the water-control sieve tube is very little, realized control water to a certain extent within the specific limits, but in the water-control sieve tube use, find, owing to tend to exist an annular space between the inwall of water-control sieve tube and oil gas well, as the water channelling outside water-control sieve tube that enters the oil gas well, will enter water-control sieve tube from the section of other non-stratum water exit end correspondences of water-control sieve tube, water-control sieve tube just can not reach control water effect.Though can solve the axial channelling problem of water by the method for filling solid particle along annular space between the borehole wall and the water-control sieve tube, but the filling solid particle needs water-control sieve tube to have the big a lot of flow of flow of required control when producing, and the flow of water-control sieve tube is very little, can not satisfy action need at water-control sieve tube outside filling solid particle, if for the permission flow of flow control device need being improved of filling, control water effect during production is greatly affected again, and the contradiction of the two makes these two kinds of water control techniques fail to realize combination always.
Summary of the invention
The purpose of this invention is to provide a kind of Fillable Water Control Sieve and distribution method thereof,, effectively stop or slow down greatly the problem of oil gas well water outlet by water-control sieve tube and the organic combination of annular pack.
To achieve these goals, the invention provides a kind of Fillable Water Control Sieve, comprise parent tube, described parent tube is provided with at least one and crosses filter ruffle, described cross forms the water conservancy diversion layer that fluid is flowed vertically between filter ruffle inner surface and the parent tube external surface, also be provided with and be arranged to have the macropore state of big flow handling capacity when the filling solid particle, be arranged to have behind the filling solid particle filling water-control valve door of the aperture road state of flow-control on the described parent tube.
Described filling water-control valve door is gland strut type filling water-control valve door, gland backguy type filling water-control valve door or plunger piston type filling water-control valve door.
Described filling water-control valve door comprises gland, strut and flexible member, offer groove on the inwall of described water conservancy diversion layer, offer pack hole on the described parent tube, one end of described flexible member is fixed in the described groove, the other end is connected with a side surface of described gland, one end of described strut is pressed on the opposite side surface of described gland, and the other end is fixed on the inner surface of parent tube, offers throttle orifice on the described gland.
Described gland backguy type filling water-control valve door comprises gland, backguy and broken string, offer groove on the inwall of described water conservancy diversion layer, offer pack hole on the described parent tube, one end of described broken string is fixed in the described groove, the other end is connected with a side surface of described gland, one end of described backguy is fixed on the opposite side surface of described gland, and the other end is fixed on the inner surface of base, offers throttle orifice on the described gland.
Described plunger piston type filling water-control valve door comprises plunger, backguy and clamp, offer pack hole on the described parent tube, offer the passage that is communicated with described pack hole and can be stopped up by described plunger in the described water conservancy diversion layer, described clamp is fixed in the passage and blocks plunger, one end of described backguy is fixed on the plunger, the other end passes passage and pack hole and is and tightens on the inner surface that shape is fixed on parent tube, offers throttle orifice on the described plunger.
To achieve these goals, the present invention also provides a kind of distribution method of Fillable Water Control Sieve, comprising:
The Fillable Water Control Sieve that is provided with filling water-control valve door is laid in the production position of oil gas well, and described filling water-control valve door is in the macropore state;
Filling solid particle between the Fillable Water Control Sieve and the borehole wall forms the pore media ring;
Filling water-control valve door on the Fillable Water Control Sieve is arranged to aperture road state, oil or water when producing are entered in the parent tube of Fillable Water Control Sieve with the throttle with the required flow resistance of control water.
The present invention proposes a kind of Fillable Water Control Sieve and distribution method thereof, compare with the technical scheme that the single employing water-control sieve tube of prior art solves out water problems, the water-control sieve tube of technical solution of the present invention is controlled water yield by the control water effect of water-control sieve tube on the one hand, avoided the channelling of water outside water-control sieve tube by annular pack on the other hand, after the filling, form the pore media ring between the water-control sieve tube and the borehole wall, the pore media ring plays the axial isolation effect outside water-control sieve tube, oil, water is when axial seepage flow, flow resistance increases, according to the seepage flow Darcy's law, flow resistance is directly proportional with flow path, so under the situation of local water breakthrough, water will be difficult to enter from a section by the outer pore media ring of water-control sieve tube the water-control sieve tube of another section.Fillable Water Control Sieve of the present invention adopts filling water-control valve door, to the annular pack solid particle layer time, filling water-control valve door of the present invention is in the macropore state with big flow handling capacity, the water of big flow enters water-control sieve tube from filling water-control valve door during filling, annular pack is finished smoothly, after the filling solid particle layer finishes, filling water-control valve door is arranged to have the aperture road state of flow-control, water during production can only enter water-control sieve tube with throttle, reaches the water blockoff purpose.
Structure of the present invention is simple and direct, construction technology is simple, can be widely used in oil gas field production and inject well, particularly be used in the production of horizontal well, effectively delay or reduce the oil gas well to go out water problems in a large number, oil gas well daily output is improved, saved manpower and financial resources on the other hand, reduced environment pollution.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of Fillable Water Control Sieve of the present invention;
Fig. 2 is the structural representation of gland strut type filling water-control valve door of the present invention;
Fig. 3 is in the structural representation of aperture road state for gland strut type filling water-control valve door of the present invention;
Fig. 4 is the structural representation of gland backguy type filling water-control valve door of the present invention;
Fig. 5 is in the structural representation of aperture road state for gland backguy type filling water-control valve door of the present invention;
Fig. 6 is the structural representation of plunger piston type filling water-control valve door of the present invention;
Fig. 7 is in the structural representation of aperture road state for plunger piston type filling water-control valve door of the present invention;
Fig. 8 is the flow chart of the distribution method of Fillable Water Control Sieve of the present invention;
Fig. 9 a, Fig. 9 b realize the schematic diagram that filling water-control valve door is closed for the present invention adopts caustic solution.Description of reference numerals:
1-Fillable Water Control Sieve string; 2-horizontal well; 3-packer;
4-pore media ring; 10-parent tube; 11-excessively filter ruffles;
13-water conservancy diversion layer; 14-blind section; 15-end ring;
16-throttle orifice; 40-filling water-control valve door; 50-plug-in unit;
60-acid solution; 41-gland; 42-strut;
42a-strut ring; 43-spring; 44-groove;
45-pack hole; 45a-pack hole seal receptacle 46-positioner;
47-sealing ring; 48-backguy; 49-broken string;
401-plunger; 402-backguy; 403-clamp;
404-pack hole; 405-passage; 406-sealing ring.
The specific embodiment
Fig. 1 is the structural representation of Fillable Water Control Sieve of the present invention, only is the technical scheme of example explanation present embodiment with the horizontal well.As shown in Figure 1, several Fillable Water Control Sieves of present embodiment are in turn connected to form Fillable Water Control Sieve string 1 and are arranged in the horizontal well 2, the well head position is fixed on the borehole wall by packer 3, the pore media ring 4 that filling is formed by solid particle between horizontal well 2 and the Fillable Water Control Sieve string 1.The agent structure of each Fillable Water Control Sieve comprises parent tube 10, parent tube 10 is provided with the one or more filter ruffle 11 of crossing, cross between the external surface of the inner surface of filter ruffle 11 and parent tube 10 and form the water conservancy diversion layer 13 that fluid is flowed vertically, cross between the filter ruffle 11 blind section 14 on the parent tube 10 for having only parent tube.Also be provided with filling water-control valve door 40 in the water conservancy diversion layer 13, filling water-control valve door 40 is provided with water control device, makes filling water-control valve door 40 and water control device form cascaded structure in water conservancy diversion layer 13.Filling water-control valve door 40 has macropore state and two kinds of states of aperture road state, the macropore state that when filling hole dielectric ring 4, is set to have big flow handling capacity, the mortar filtrate of big flow enters in the parent tube 10 from filling water-control valve door 40 when making filling, is discharged to ground by parent tube 10; After filling hole dielectric ring 4 finishes, be arranged to have the aperture road state of flow-control, make oil or water in the production enter parent tube 10 with the low discharge throttle by the water control device that is provided with on the filling water-control valve door 40.
Compare with the technical scheme that the single employing water-control sieve tube of prior art solves out water problems, the present embodiment Fillable Water Control Sieve organically combines water-control sieve tube and annular pack, control water yield by the throttling action of water-control sieve tube on the one hand, avoided the channelling of water outside water-control sieve tube (except the serious well of formation sand production) by annular pack on the other hand, after the filling, form the pore media ring between the water-control sieve tube and the borehole wall, the pore media ring plays the effect of axial isolation outside water-control sieve tube, oil, water is therein during seepage flow, flow resistance increases, according to the seepage flow Darcy's law, flow resistance is directly proportional with flow path, so under the situation of local water breakthrough, water will be difficult to enter water-control sieve tube by the outer pore media ring of water-control sieve tube from other sections.And to the annular pack solid particle time, present embodiment filling water-control valve door is in the macropore state with big flow handling capacity, the mortar filtrate of big flow enters water-control sieve tube with big flow during filling, annular pack is finished smoothly, after the filling solid particle finishes, filling water-control valve door is arranged to have the aperture road state of flow-control, and the water during production can only enter water-control sieve tube by the water control device low discharge that is provided with on the filling water-control valve door, reduces the oil gas well yield.
On the technique scheme basis, filling water-control valve door can have multiple implementation structure, and the present invention preferably adopts gland strut type filling water-control valve door, gland backguy type filling water-control valve door and plunger piston type filling water-control valve door.
Fig. 2 is the structural representation of gland strut type filling water-control valve door of the present invention.In the present embodiment, parent tube 10 is connected with mistake filter ruffle 11 by end ring 15, and the water conservancy diversion layer 13 that formation is flowed fluid vertically between the external surface of the inner surface of crossing filter ruffle 11 and parent tube 10, gland strut type filling water-control valve door is arranged on the end ring 15 in the water conservancy diversion layer 13, also be provided with one or more water control device on the filling water-control valve door, water control device is the throttle-type water control device, gland strut type filling water-control valve door and throttle-type water control device all is arranged on forms cascaded structure in the water conservancy diversion layer 13.As shown in Figure 2, gland strut type filling water-control valve door comprises gland 41, strut 42 and spring 43, offer groove 44 on the inwall of end ring 15, offer pack hole 45 on the parent tube 10, spring 43 is arranged in the groove 44, one end is fixed on the inner surface of groove 44, the other end is connected with the upper surface of gland 41, strut 42 is by the fragile material manufacturing, one end top is located on the soffit of gland 41, the other end passes on the inner surface that pack hole 45 is fixed on parent tube 10, offers at least one throttle orifice with throttling action 16 on the gland 41.Particularly, pack hole 45 is provided with the pack hole seal receptacle 45a of concave station shape towards a side of gland 41, pack hole seal receptacle 45a is used for cooperating with gland 41, and pack hole 45 is provided with positioner 46 near a side of parent tube inner surface, and positioner 46 is used to limit the direction of motion of strut 42; The outer rim of gland 41 is arranged with sealing ring 47, strengthens the sealing between gland 41 and the pack hole seal receptacle 45a when gland cooperates with the pack hole seal receptacle, makes oil or water enter parent tube 10 by throttle orifice 16.In the present embodiment, sealing ring 47 can adopt O shape rubber ring, and spring 43 also can adopt other flexible members, and as elastomer block etc., the upper edge of pack hole seal receptacle 45a can be arranged for ease of the chamfering structure that gland enters.
When preparing to use the present embodiment Fillable Water Control Sieve, gland strut type filling water-control valve door is arranged to state shown in Figure 2, one end of strut 42 top be located in the parent tube 10 on the side surface, the other end passes pack hole 45 and withstands gland 41, gland 41 is compressed in spring 43 in the groove 44 of end ring 15, and gland strut type filling this moment water-control valve door is in the macropore state.After Fillable Water Control Sieve put into well, filling solid particle in the annular space between the borehole wall and Fillable Water Control Sieve, mortar filtrate in the mortar enters in the parent tube 10 by the filling passage A in the water conservancy diversion layer 13 and the filling water-control valve door of macropore state, and be pumped to ground, form the pore media ring that forms by solid particle of filling annular space.After filling finishes, change the state of filling water-control valve door on the Fillable Water Control Sieve.Fig. 3 is in the structural representation of aperture road state for gland strut type filling water-control valve door of the present invention, particularly, plug-in unit is put into Fillable Water Control Sieve, move the state that changes filling water-control valve door on the Fillable Water Control Sieve successively by plug-in unit 50, plug-in unit 50 in moving clashes into strut 42 successively, because strut 42 is a fragile material, in bump, crashed, gland 41 loses support, pushed to pack hole 45 by spring 43, and be pressed on the pack hole seal receptacle of pack hole 45, pack hole 45 is stopped up, because the gland 41 of gland strut type filling water-control valve door is provided with at least one throttle orifice 16, gland strut type filling water-control valve door is in aperture road state, water during production and oil enter in the parent tube 10 by control aquaporin B in the water conservancy diversion layer 13 and the throttle orifice 16 on the filling water-control valve door gland 41, and production of hydrocarbons is normally carried out.In addition, close gland strut type filling water-control valve door and also can adopt caustic solution, by pour into corrosive liquid in parent tube, corrosive liquid also can realize eliminating the support of gland with the strut corrosion fracture, and gland strut type filling water-control valve door is closed the most at last.
In technique scheme, positioner can adopt the ring set structure, and outer shroud is set in the pack hole, and inner ring sleeve is located at outside the strut, and outer shroud is connected by connecting rod with interior ring, makes between outer shroud and the interior ring and forms flow channel for liquids, realizes the location and the guiding of strut; Arc can be arranged in the side of gland, can avoid gland stuck in moving downward; An end that is positioned at the parent tube internal overarm support can directly be supported on the sidewall of water-control sieve tube, also can be fixed on the sidewall in the parent tube by middleware, and multiple implementation structure can be arranged, as long as eliminate the holding state of strut by bump or corrosion.The structure of present embodiment gland strut type filling water-control valve door is simple and direct, and technology is simple.
Fig. 4 is the structural representation of gland backguy type filling water-control valve door of the present invention.In the present embodiment, parent tube 10 is connected with mistake filter ruffle 11 by end ring 15, and the water conservancy diversion layer 13 that formation is flowed fluid vertically between the external surface of the inner surface of crossing filter ruffle 11 and parent tube 10, gland strut type filling water-control valve door is arranged on the end ring 15 in the water conservancy diversion layer 13, also be provided with one or more water control device on the filling water-control valve door, water control device is the throttle-type water control device, gland strut type filling water-control valve door and throttle-type water control device all is arranged on forms cascaded structure in the water conservancy diversion layer 13.As shown in Figure 4, gland backguy type filling water-control valve door comprises gland 41, backguy 48 and breaks 49, offer groove 44 on the inwall of end ring 15, offer pack hole 45 on the parent tube 10, an end of broken string 49 is fixed on the inner surface of groove 44, and the other end is connected with the upper surface of gland 41, one end of backguy 48 is fixed on the soffit of gland 41, the other end passes pack hole 45, is to tighten on the inner surface that shape is fixed on parent tube 10, offers the throttle orifice 16 with throttling action on the gland 41.Particularly, pack hole 45 is provided with the pack hole seal receptacle 45a of concave station shape towards a side of gland 41, pack hole seal receptacle 45a is used for cooperating with gland 41, pack hole 45 is provided with positioner 46 near a side of parent tube inner surface, positioner 46 is used to limit the direction of motion of backguy 48, the outer rim of gland 41 is arranged with sealing ring 47, strengthens the sealing between gland 41 and the pack hole seal receptacle 45a.The pull-off force of backguy 48 is greater than the pull-off force of broken string 49, and for example, when the pull-off force of backguy 48 was 15Kg, the pull-off force of broken string 49 can be arranged to 5Kg.In the present embodiment, sealing ring 47 can adopt O shape rubber ring, the upper edge of pack hole seal receptacle 45a can be arranged for ease of the chamfering structure that gland enters, and breaks speed and the reliability of rear pressing cover to the pack hole motion in order to improve broken string, also spring can be set between gland and the groove.
When preparing to use the present embodiment Fillable Water Control Sieve, gland backguy type filling water-control valve door is arranged to state shown in Figure 4, one end of backguy 48 be fixed in the parent tube 10 on the side surface, the other end passes pack hole 45 and holds gland 41, make gland 41 balance under the pulling force of backguy 48 and broken string 49, and being positioned at the groove 44 of end ring 15, gland backguy this moment type filling water-control valve door is in the macropore state.After Fillable Water Control Sieve put into well, filling solid particle in the annular space between the borehole wall and Fillable Water Control Sieve, mortar filtrate in the mortar enters in the parent tube 10 by the filling passage A in the water conservancy diversion layer 13 and the filling water-control valve door of macropore state, and be pumped to ground, form the pore media ring that forms by solid particle of filling annular space.After filling finishes, change the state of filling water-control valve door on the Fillable Water Control Sieve.Fig. 5 is in the structural representation of aperture road state for gland backguy type filling water-control valve door of the present invention, particularly, plug-in unit is put into Fillable Water Control Sieve, move the state that changes filling water-control valve door on the Fillable Water Control Sieve successively by plug-in unit 50, plug-in unit 50 in moving clashes into backguy 48 successively, hit backguy 48 curved, backguy 48 pulling glands 41 move downward, break the most at last and 49 break, backguy 48 pulls to pack hole 45 with gland 41, and is pressed on the pack hole seal receptacle of pack hole 45, pack hole 45 is stopped up, plug-in unit 50 continues to move, and backguy severs the most at last, and next filling water-control valve door is operated.Because the gland 41 of gland strut type filling water-control valve door is provided with at least one throttle orifice 16, gland strut type filling water-control valve door is in aperture road state, water during production and oil enter in the parent tube 10 by control aquaporin B in the water conservancy diversion layer 13 and the throttle orifice 16 on the filling water-control valve door gland 41, and production of hydrocarbons is normally carried out.In the present embodiment, an end that is positioned at the parent tube backguy can directly be fixed on the sidewall of parent tube, also can be fixed on the sidewall in the parent tube by middleware, as long as by the plug-in unit bump broken string is broken.
Fig. 6 is the structural representation of plunger piston type filling water-control valve door of the present invention.In the present embodiment, parent tube 10 is connected with mistake filter ruffle 11 by end ring 15, and the water conservancy diversion layer 13 that formation is flowed fluid vertically between the external surface of the inner surface of crossing filter ruffle 11 and parent tube 10, plunger piston type filling water-control valve door is arranged on the end ring 15 in the water conservancy diversion layer 13, also be provided with one or more water control device on the filling water-control valve door, water control device is the throttle-type water control device, plunger piston type filling water-control valve door and throttle-type water control device all is arranged on forms cascaded structure in the water conservancy diversion layer 13.As shown in Figure 6, plunger piston type filling water-control valve door comprises plunger 401, backguy 402 and clamp 403, offer pack hole 404 on the parent tube 10, offer the passage 405 that is communicated with pack hole 404 and can be stopped up by plunger 401 on the end ring 15 in the water conservancy diversion layer 13, clamp 403 is fixed on the inner surface of passage 405, be used to block plunger 401, one end of backguy 402 is fixed on the plunger 401, the other end passes passage 405 and pack hole 404, be and tighten on the inner surface that shape is fixed on parent tube 10, offer at least one throttle orifice with throttling action 16 on the plunger 401.Particularly, passage 405 comprises straightway and oblique section, and straightway is used for cooperating with plunger 401 towards a side of plunger 401, and oblique section is opened on parent tube 10 surfaces.Further, plunger also is arranged with sealing ring 406.
When preparing to use the present embodiment Fillable Water Control Sieve, plunger piston type filling water-control valve door is arranged to state shown in Figure 6, one end of backguy 402 be fixed in the parent tube 10 on the side surface, the other end passes pack hole 404 and passage 405 is held plunger 401, plunger 401 is because clamp 403 is fixing, remain static, plunger piston type filling this moment water-control valve door is in the macropore state.After Fillable Water Control Sieve put into well, filling solid particle in the annular space between the borehole wall and Fillable Water Control Sieve, mortar filtrate in the mortar enters in the parent tube 10 by the filling passage A in the water conservancy diversion layer 13 and the filling water-control valve door of macropore state, and be pumped to ground, form the pore media ring that forms by solid particle of filling annular space.After filling finishes, change the state of filling water-control valve door on the Fillable Water Control Sieve.Fig. 7 is the structural representation that plunger piston type filling water-control valve door of the present invention is in aperture road state, particularly, plug-in unit is put into Fillable Water Control Sieve, moves the state that changes filling water-control valve door on the Fillable Water Control Sieve successively by plug-in unit 50.Plug-in unit 50 in moving clashes into backguy 402 successively, hit backguy 402 curved, backguy 402 pulling plungers 401 travel forward, break through stopping of clamp 403, and drawn in the passage 405 by backguy 402, passage 405 is stopped up, plug-in unit 50 continues to move, backguy severs the most at last, and next filling water-control valve door is changed state of operation.Because the plunger 401 of plunger piston type filling water-control valve door is provided with at least one throttle orifice 16, plunger piston type filling this moment water-control valve door is in aperture road state, water during production and oil enter in the parent tube 10 by control aquaporin B in the water conservancy diversion layer 13 and the throttle orifice 16 on the filling water-control valve door gland 41, and production of hydrocarbons is normally carried out.In the present embodiment, an end that is positioned at the parent tube backguy can directly be fixed on the sidewall of parent tube, also can be fixed on the sidewall in the parent tube by middleware, as long as by the plug-in unit bump broken string is broken.
Fig. 8 is the flow chart of the distribution method of Fillable Water Control Sieve of the present invention, is specially:
Compare with the technical scheme that the single employing water-control sieve tube of prior art solves out water problems, the distribution method of present embodiment Fillable Water Control Sieve organically combines water-control sieve tube and annular pack, control water yield by the throttling action of water-control sieve tube on the one hand, avoided the channelling of water outside water-control sieve tube (except the serious well of formation sand production) by annular pack on the other hand, after the filling, form the pore media ring between the water-control sieve tube and the borehole wall, the pore media ring plays the effect of axial isolation outside water-control sieve tube, oil, water is therein during seepage flow, flow resistance increases, according to the seepage flow Darcy's law, flow resistance is directly proportional with flow path, so under the situation of local water breakthrough, water will be difficult to enter water-control sieve tube by the outer pore media ring of water-control sieve tube from other sections.And to the annular pack solid particle time, present embodiment filling water-control valve door is in the macropore state with big flow handling capacity, the mortar filtrate of big flow enters water-control sieve tube with big flow during filling, annular pack is finished smoothly, after the filling solid particle finishes, filling water-control valve door is arranged to have the aperture road state of flow-control, and the water during production can only enter water-control sieve tube by the water control device low discharge that is provided with on the filling water-control valve door, reduces the oil gas well yield.
On the technique scheme basis, the Fillable Water Control Sieve that is provided with filling water-control valve door is laid in the production position of oil gas well, described filling water-control valve door be in the macropore state and between the Fillable Water Control Sieve and the borehole wall filling solid particle can adopt conventional method, step 13 is arranged to aperture road state with the filling water-control valve door on the Fillable Water Control Sieve and is specially:
Step 131, plug-in unit is put into Fillable Water Control Sieve;
Step 132, move successively by plug-in unit the filling water-control valve door on the Fillable Water Control Sieve is arranged to aperture road state.
The distribution method of present embodiment Fillable Water Control Sieve is realized the change of filling water-control valve door state by adopting plug-in unit, wherein filling water-control valve door can be a gland strut type filling water-control valve door, also can be gland backguy type filling water-control valve door, can also be plunger piston type filling water-control valve door.Particularly, when using gland strut type filling water-control valve door, step 132 can be strut or the strut ring that crashes each filling water-control valve door in the Fillable Water Control Sieve during plug-in unit moves, and makes described filling water-control valve door become aperture road state; When using gland backguy type filling water-control valve door or plunger piston type filling water-control valve door, step 132 can be the backguy of each filling water-control valve door in the bump Fillable Water Control Sieve during plug-in unit moves, with described backguy hit curved, snap, make described filling water-control valve door become aperture road state.
On the technique scheme basis, step 13 can also be specially:
Step 131 ＇, in Fillable Water Control Sieve, import corrosive liquid;
Step 132 ＇, corrosive liquid make described filling water-control valve door become aperture road state the strut or the corrosion fracture of strut ring of each filling water-control valve door in the Fillable Water Control Sieve.
The distribution method of present embodiment Fillable Water Control Sieve changes the state of filling water-control valve door by adopting caustic solution, and wherein filling water-control valve door can be a gland strut type filling water-control valve door.When using gland strut type filling water-control valve door, present embodiment is eliminated the supporting role of strut by corrosive liquid corrosion strut or strut ring, makes described filling water-control valve door change into aperture road state from the macropore state.Preferably, strut or strut ring adopt the aluminum goods, and corrosive liquid adopts the acid solution goods, by chemical reaction fast, eliminate the supporting role of strut, and described filling water-control valve door is closed.
Fig. 9 a, Fig. 9 b realize the schematic diagram that filling water-control valve door is closed for the present invention adopts caustic solution, strut ring 42a is arranged on the inner surface of parent tube 10, one end of strut 42 is supported on the strut ring 42a, the other end of strut 42 passes pack hole 45 and withstands gland 41, make gland 41 spring 43 is compressed in the groove 44 of end ring 15, keep gland strut type filling water-control valve door to be in the macropore state, wherein strut ring 42a adopts the aluminum goods.Carry out the packing ring do-nothing operation after Fillable Water Control Sieve put into well, the mortar filtrate in the mortar enters in the parent tube 10 by the filling passage A in the water conservancy diversion layer 13 and the filling water-control valve door of macropore state, shown in Fig. 9 a; After filling finishes, in parent tube 10, pour into acid solution 60, acid solution 60 is with the strut ring 42a corrosion failure of aluminum, make strut 42 lose support, pushed to pack hole 45 by spring 43, and be pressed on the pack hole seal receptacle of pack hole 45, pack hole 45 is stopped up, gland strut type filling this moment water-control valve door is in aperture road state, water during production and oil enter in the parent tube 10 by control aquaporin B in the water conservancy diversion layer 13 and the throttle orifice 16 on the filling water-control valve door gland 41, production of hydrocarbons is normally carried out, shown in Fig. 9 b.
It should be noted that at last: above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the spirit and scope of technical solution of the present invention.
Claims (18)
1. Fillable Water Control Sieve, comprise parent tube, described parent tube is provided with at least one and crosses filter ruffle, the described mistake forms the water conservancy diversion layer that fluid is flowed vertically between filter ruffle inner surface and the parent tube external surface, it is characterized in that, also be provided with and when the filling solid particle, be arranged to have the macropore state of big flow handling capacity, behind the filling solid particle, be arranged to have the filling water-control valve door of the aperture road state of flow-control on the described parent tube.
2. Fillable Water Control Sieve according to claim 1 is characterized in that, described parent tube is connected with described filtration cover by end ring, and described filling water-control valve door is arranged on the described end ring.
3. Fillable Water Control Sieve according to claim 1 and 2, it is characterized in that, described filling water-control valve door comprises gland, strut and flexible member, offer groove on the inwall of described water conservancy diversion layer, offer pack hole on the described parent tube, one end of described flexible member is fixed in the described groove, the other end is connected with a side surface of described gland, one end of described strut is pressed on the opposite side surface of described gland, the other end is fixed on the inner surface of parent tube, offers throttle orifice on the described gland.
4. Fillable Water Control Sieve according to claim 3 is characterized in that, described strut is the fragile material goods.
5. Fillable Water Control Sieve according to claim 3 is characterized in that described strut is fixed on the inner surface of described parent tube by the strut ring.
6. Fillable Water Control Sieve according to claim 3, it is characterized in that be provided with the positioner that limits the described strut direction of motion in the described pack hole, the outer shroud of described positioner is set in the pack hole, inner ring sleeve is located at outside the strut, and outer shroud is connected by connecting rod with interior ring.
7. Fillable Water Control Sieve according to claim 3 is characterized in that the edge of described gland is arranged with sealing ring.
8. Fillable Water Control Sieve according to claim 1 and 2, it is characterized in that, described filling water-control valve door comprises gland, backguy and broken string, offer groove on the inwall of described water conservancy diversion layer, offer pack hole on the described parent tube, an end of described broken string is fixed in the described groove, the other end is connected with a side surface of described gland, one end of described backguy is fixed on the opposite side surface of described gland, and the other end is fixed on the inner surface of base, offers throttle orifice on the described gland.
9. Fillable Water Control Sieve according to claim 8 is characterized in that, the pull-off force of described backguy is greater than the pull-off force of broken string.
10. Fillable Water Control Sieve according to claim 8 is characterized in that the edge of described gland is arranged with sealing ring.
11. Fillable Water Control Sieve according to claim 1 and 2, it is characterized in that, described filling water-control valve door comprises plunger, backguy and clamp, offer pack hole on the described parent tube, offer the passage that is communicated with described pack hole and can be stopped up by described plunger in the described water conservancy diversion layer, described clamp is fixed in the passage and blocks plunger, one end of described backguy is fixed on the plunger, the other end passes passage and pack hole and is and tightens on the inner surface that shape is fixed on parent tube, offers throttle orifice on the described plunger.
12. Fillable Water Control Sieve according to claim 11 is characterized in that, also is arranged with at least one sealing ring on the described plunger.
13. the distribution method of a Fillable Water Control Sieve is characterized in that, comprising:
The Fillable Water Control Sieve that is provided with filling water-control valve door is laid in the production position of oil gas well, and described filling water-control valve door is in the macropore state;
Filling solid particle between the Fillable Water Control Sieve and the borehole wall forms the pore media ring;
Filling water-control valve door on the Fillable Water Control Sieve is arranged to aperture road state, oil or water when producing are entered in the parent tube of Fillable Water Control Sieve with the throttle with the required flow resistance of control water.
14. the distribution method of Fillable Water Control Sieve according to claim 13 is characterized in that, describedly filling water-control valve door on the Fillable Water Control Sieve is arranged to aperture road state is specially:
Plug-in unit is put into Fillable Water Control Sieve;
Move successively by plug-in unit the filling water-control valve door on the Fillable Water Control Sieve is arranged to aperture road state.
15. the distribution method of Fillable Water Control Sieve according to claim 14, it is characterized in that, described moving by plug-in unit is arranged to aperture road state with the filling water-control valve door on the Fillable Water Control Sieve successively and is specially: crash the strut or the strut ring of each filling water-control valve door in the Fillable Water Control Sieve during plug-in unit moves, make described filling water-control valve door become aperture road state.
16. the distribution method of Fillable Water Control Sieve according to claim 14, it is characterized in that, described moving by plug-in unit is arranged to aperture road state with the filling water-control valve door on the Fillable Water Control Sieve successively and is specially: the backguy of each filling water-control valve door in the bump Fillable Water Control Sieve during plug-in unit moves, with described backguy hit curved, snap, make described filling water-control valve door become aperture road state.
17. the distribution method of Fillable Water Control Sieve according to claim 13 is characterized in that, describedly filling water-control valve door on the Fillable Water Control Sieve is arranged to aperture road state is specially:
In Fillable Water Control Sieve, import corrosive liquid;
Corrosive liquid makes described filling water-control valve door become aperture road state the strut or the corrosion fracture of strut ring of each filling water-control valve door in the Fillable Water Control Sieve.
18. the distribution method of Fillable Water Control Sieve according to claim 17 is characterized in that, described strut or strut ring are aluminum products, and described corrosive liquid is an acid solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100556799A CN101476455B (en) | 2008-01-04 | 2008-01-04 | Filling water-control sieve tube and its laying method |
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| CN2008100556799A CN101476455B (en) | 2008-01-04 | 2008-01-04 | Filling water-control sieve tube and its laying method |
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| CN101476455A true CN101476455A (en) | 2009-07-08 |
| CN101476455B CN101476455B (en) | 2012-04-25 |
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Owner name: ANTON BERLIN OIL TECHNOLOGY (BEIJING) CO., LTD. Free format text: FORMER OWNER: ANDONG PETROLEUM TECHNOLOGY (GROUP) CO., LTD. Effective date: 20130520 |
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