CN103726813A - Well completion structure and method for building packer in packing ring outside oil gas well filter tubing string - Google Patents
Well completion structure and method for building packer in packing ring outside oil gas well filter tubing string Download PDFInfo
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- CN103726813A CN103726813A CN201410013598.8A CN201410013598A CN103726813A CN 103726813 A CN103726813 A CN 103726813A CN 201410013598 A CN201410013598 A CN 201410013598A CN 103726813 A CN103726813 A CN 103726813A
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Abstract
The invention discloses a well completion structure and method for building a packer in a packing ring outside an oil gas well filter tubing string. The structure comprises an oil gas well wall and the filter tubing string, the granular packing ring is formed between the oil gas well wall and the filter tubing string, and at least one packer section is arranged in the granular packing ring between the oil gas well wall and the filter tubing string. The packer sections can be built one by one along a shaft in a segmented mode according to the design number, or multiple packer sections are built at a time along the shaft according to the design number. The structure and method are used for building the packer sections in the granular packing ring outside the oil gas well filter tubing string, and segmented flow control of the whole shaft can be completely achieved.
Description
Technical field
The present invention relates to set up in the outer packing ring of a kind of Oil/gas Well strainer tubing string completion structure and the method for packing, belong to oil and natural gas exploitation field.The Oil/gas Well here refers to the Oil/gas Well of broad sense in oil-gas field development, comprise oil well, gas well, the natural gas well, Injection Well, water injection well, heat extraction by steam injection well, steam-stimulated well, steam injection well, deep-well and ultradeep well, horizontal well, high angle hole, directional well, straight well etc.
Background technology
1, Oil/gas Well needs sectional flow control technology:
In same well, because the permeability of ground interlayer is along axial widely different of production sections of oil and gas wells, differences in viscosity between profit is very large, and other reasons, caused formation water to enter in advance pit shaft along the high stratum of permeability, the moisture content of Oil/gas Well production fluid is significantly raise, and oil yield significantly declines.The production section of for example certain Oil/gas Well is 300 meters, 30 meters of the high production segment lengths of permeability, ground interlayer permeability extreme difference is 3, the ratio of viscosities 100 of the profit in stratum, when formation water enters after pit shaft in advance along the high stratum of permeability, the moisture content of this well production fluid can rise to rapidly more than 95%, when daily oil production is down to not water outlet 1/3 of daily oil production.The problems referred to above have been brought huge economic loss to field produces.
In order to address the above problem, Oil/gas Well needs sectional flow control technology.Sectional flow control technology is the production section of oil gas field Injection Well or development well to be separated into several independently develop in interval simultaneously.The part that sectional flow control technology has slowed down formation water significantly advances fast, has extended anhydrous productive life, avoids the fast-descending of oil yield; Even after Oil/gas Well water outlet, sectional flow control technology also can effectively limit formation water output and sharply rise, and increases daily oil production.The Oil/gas Well of hole condition as in the previous paragraph, after oil well water breakthrough, sectional flow control technology can be by production fluid moisture control below 60%, and daily oil production is increased to 3 times of left and right before control water.
Sectional flow control technology is not only applied to horizon mining well, for multilayer straight well/directional well, equally also can play a role, and realizes the each substratum independent exploitation simultaneously in multilayer straight well/directional well.
Due to the not only fashionable energy of MEDIA FLOW sectional flow control of sectional flow control technology, when injecting from pit shaft toward stratum, medium also can realize sectional flow control, so this technology is not only applicable to recovery well, be equally applicable to Injection Well.As water injection well, acid filling, steamed well, injects various media etc. and is all applicable to this technology during tertiary oil production in oil field.Can significantly increase work efficiency, reduce operating cost.
2, the sectional flow control mode of applying in current Oil/gas Well has following two kinds:
The first: as shown in Figure 1, realize sectional flow control with flow control filter pipe column and packer; In Fig. 1,1-1 is packer, realizes interval separation, and 1-2 is flow control tubing string, realizes the control of flow, and 1-3 is the bore hole borehole wall;
The second: as shown in Figure 2, realize sectional flow control with flow control filter pipe column and packing body.In Fig. 2,2-1 is packing body, and 2-2 is flow control filter pipe column, and 2-3 is the bore hole borehole wall.Different from the first sectional flow control technology, with packing body, substituted packer here.Packing body is to be lowered to after flow control filter pipe column, by specific activities, toward the annular space between flow control filter pipe column and the borehole wall, (above-mentioned annular space is the annular space of broad sense, it not only comprises the annular space between flow control filter pipe column and outer tubing string or the borehole wall, also comprise that cement sheath alters the annular space between annular space, antipriming pipe and the borehole wall between groove, screen casing and the borehole wall etc.) filling anti-crossflow packing particles, and pile up consolidation and form.The feature of packing body is almost non-resistance of Radial Flow, axially channelling is limited to less level, so packing body is equivalent to several packers can the axial channelling of packing, automatically pit shaft is separated into some intervals vertically, and between interval, distance is longer, infiltration capacity is less, almost there is no channelling.
3, in current above-mentioned the second sectional flow control technology application, there is following point:
(1) for multilayer straight well, even if having applied the second sectional flow control technology implementation multilayer exploits simultaneously, as shown in Figure 3, but due to pressure gap between layers, the contradictions such as permeability contrast are still more serious, or interlayer is between layers very thin, still there is between layers larger channelling, have influence on the effect of sectional flow control technology in multilayer straight well.In Fig. 3,3-1 is the bore hole borehole wall, and 3-2 is flow control filter pipe column, and 3-3 is anti-channelling particle, and 3-4 is oil-producing formation, and 3-5 is a certain amount of channelling of interlayer, and 3-6 is water-yielding stratum, and 3-7 is oil-producing formation.
(2) for gravel filling sand prevention well, as shown in Figure 4, even if realized sectional flow control in plain filter tubing string, but, because the particle diameter of its pack gravel is larger, permeability can reach 140 darcies, even larger, in annular space gravel, channelling amount is vertically very large like this, has directly destroyed the effect of the sectional flow control of whole pit shaft.In Fig. 4,4-1 is the bore hole borehole wall, and 4-2 is gravel ring, and 4-3 is the channelling of gravel ring, and 4-4 is plain filter tubing string, the anti-channelling particle of 4-5, and 4-6 is flow control filter pipe column, 4-6 is water outlet.
(3) for multilayer straight well; quartz sand filling sand prevention completion in pit shaft; and pressure gap between layers; the contradictions such as permeability contrast are more serious; or interlayer is between layers thin especially, even if apply in this case sectional flow control technology, in quartz sand ring and anti-channelling particle ring, all there is larger channelling; or can not thoroughly solve a difficult problem for interlayer contradiction, as shown in Figure 5.In Fig. 5,5-1 is the bore hole borehole wall, and 5-2 is flow control filter pipe column, and 5-3 is anti-channelling particle, and 5-4 is oil-producing formation, and 5-5 is plain filter tubing string, and 5-6 is quartz sand packing ring, and 5-7 is water-yielding stratum, and 5-8 is oil-producing formation.
For producing well, horizontal well, applies sectional flow control technology and all has the problems referred to above in straight well and directional well.For Injection Well, equally also can there are the problems referred to above.As water injection well, steamed well, acid filling well, carbon dioxide injection well etc.
Illustrate: the strainer tubing string in (1) the problems referred to above, comprises plain filter tubing string: as cutting seam sieve tube, wire-wrapped screen, precise micropore composite screen pipe, accurate punched hole screen pipe, slotted liners etc., also comprise flow control filter pipe column (also having flow control effect in the time of sand control); (2) the grain packing ring in the problems referred to above not only refers to gravel particle packing ring, also comprises the ring that other medium charges form, as quartz sand, haydite, precoated sand, the ultralight particle that macromolecular material forms, float pearl, perlite etc., the anti-channelling particle that forms packing body includes, without being limited to above-mentioned gravel, quartz sand, haydite, precoated sand, the ultralight particle that macromolecular material forms, float pearl, perlite etc.(3) annular space between above-mentioned strainer tubing string and the borehole wall is the annular space of broad sense, it not only comprises strainer tubing string and outer tubing string, annular space between strainer tubing string or the borehole wall, also comprises that cement sheath alters the annular space between annular space, antipriming pipe and the borehole wall between groove, screen casing and the borehole wall etc.
Up to now, how in the grain packing ring outside strainer tubing string, set up packing, and reach the packing effect of expection, thoroughly solve interlayer contradiction and be oil field indeterminable problem all for a long time, become a large obstacle of oilfield technology application.
Summary of the invention
The technical issues that need to address of the present invention are just to overcome the defect of prior art, completion structure and the method for in the outer packing ring of a kind of Oil/gas Well strainer tubing string, setting up packing are provided, utilization of the present invention is set up packing in grain packing ring outside Oil/gas Well strainer tubing string, thoroughly realizes the sectional flow control of whole pit shaft.
For addressing the above problem, the present invention adopts following technical scheme:
The invention discloses the completion structure of setting up packing in the outer packing ring of a kind of Oil/gas Well strainer tubing string, comprise the Oil/gas Well borehole wall and strainer tubing string, between the Oil/gas Well borehole wall and strainer tubing string, form grain packing ring; In grain packing ring between the Oil/gas Well borehole wall and strainer tubing string, be provided with at least one block ring.
Preferably, the material one of setting up block ring can, for without oozing medium, can flow in advance, the liquid that can solidify under certain condition or after certain hour, and as gel, cement paste etc., another kind is low permeability media, subparticle, as Paris white.Referred to herein as choked flow medium.
The present invention discloses the method for setting up packing in the outer grain packing ring of a kind of Oil/gas Well strainer tubing string, described method be toward injection choked flow medium in compartment of terrain in grain packing ring, formation block ring, and concrete steps are:
1) toward being lowered to pipe string with one group of instrument in pit shaft to design attitude, concrete one group of instrument is by seal, inlet, seal composition; Wherein seal can be the packer accessories such as hydraulic buckling packer, cup packer, and inlet can be constant pressure valve, through hole etc.
2) in instrument pipe string, inject the choked flow medium preparing, choked flow medium, by inlet, by strainer, enters grain packing ring, the injection of complete design amount choked flow medium, and a block ring has been set up.
3) Move tool pipe string certain distance, sets up block ring equally again, successively according to design, sets up all block rings in whole pit shaft;
4) after choked flow medium has injected, instrument pipe string is proposed smoothly;
5) choked flow medium enters after grain packing ring, forms some sections of stable and firm block rings in grain packing ring.
The present invention discloses the method for setting up packing in the outer packing ring of another Oil/gas Well strainer tubing string, described method is injected hypotonic or nothing for compartment of terrain in grain packing ring simultaneously and is oozed medium, forms some sections of block rings, and concrete steps are:
1) along pit shaft, according to the quantity of design, in pit shaft, be lowered to pipe string be comprised of some groups of instruments to design attitude, concrete every group of instrument be by seal, inlet, and seal forms;
2) in instrument pipe string, inject the choked flow medium preparing, every group of instrument started working simultaneously, and choked flow medium passes through inlet, pass through strainer, enter grain packing ring, after the injection rate of design completes, at this moment along pit shaft, according to the quantity of design is disposable, set up some sections of block rings; While needing, Move tool pipe string, the rest may be inferred, sets up equally more some sections of block rings.
3) after choked flow medium has injected, instrument pipe string is proposed smoothly;
4) choked flow medium enters after grain packing ring, forms some sections of stable and firm block rings in grain packing ring.
In the inventive method, the spatial dimension that choked flow medium forms block ring includes but not limited to following three kinds: the first can be entered in the anti-channelling grain packing ring outside flow control strainer and be formed block ring by flow control strainer, and the second can be entered in the outer grain packing ring of plain filter and be formed block ring by plain filter; The third can be entered in anti-channelling grain packing ring and be formed block ring by flow control strainer, then by plain filter, enter in the outer grain packing ring of tubing string and form block ring, in the grain packing ring outside anti-channelling grain packing ring and the plain filter outside flow control strainer, set up two groups of block rings simultaneously.
In the inventive method, described constant pressure valve, when its inside and outside differential pressure is greater than setting pressure, constant pressure valve is opened; When its inside and outside differential pressure is not more than setting pressure, constant pressure valve cuts out; Its effect is after guaranteeing that hydraulic buckling packer inflation puts in place, and the medium that inject grain packing ring just flows toward grain packing ring in pipe string; Described hydraulic buckling packer, just starts to expand when its inside and outside differential pressure is greater than zero, and when inside and outside differential pressure is greater than setting pressure, hydraulic buckling packer could expand and put in place; When its inside and outside differential pressure is zero, hydraulic buckling packer can be retracted to and approach original size.
The present invention by setting up packing in grain packing ring outside strainer tubing string, by playing the block ring of packing effect, thoroughly solve the pressure gap of interlayer, the contradictions such as permeability contrast, completely stifled exhausted fluid media (medium), along the axial channelling of grain packing ring, is realized the sectional flow control of whole pit shaft.
Accompanying drawing explanation
Fig. 1 is that flow control filter pipe column and packer are realized sectional flow control.
Fig. 2 is that flow control filter pipe column and packing body are realized sectional flow control.
Fig. 3 is that multilayer straight well still has larger channelling between layers.
Fig. 4 is that in annular space gravel, channelling amount is vertically very large, has directly destroyed the effect of the sectional flow control of whole pit shaft.
Fig. 5 is that multilayer straight well interlayer permeability contrast is very large, to such an extent as to the anti-channelling particle ring of filling can't thoroughly solve interlayer contradiction problem.
Fig. 6 is the pipe string structure with one group of instrument.
Fig. 7 is the pipe string structure being comprised of some groups of instruments.
Fig. 8: embodiment 1 sets up the process schematic diagram of block ring
Fig. 9 is that embodiment 1 is setting up the completion structure schematic diagram of packing section.
Figure 10 is that embodiment 2 sets up the 1st block ring process schematic diagram.
Figure 11 is the process schematic diagram that embodiment 2 sets up the 2nd block ring.
Figure 12 is the completion structure figure that embodiment 2 has set up block ring.
Figure 13 be embodiment 3 being lowered in the multilayer straight well of quartz sand filling completion outside wire-wrapped screen and screen casing, set up the process schematic diagram of first group of block ring.
Figure 14 is embodiment 3 being lowered in the multilayer straight well of quartz sand filling completion outside wire-wrapped screen and screen casing, set up after first group of block ring, be lowered to flow control filter pipe column, and between flow control filter pipe column and wire-wrapped screen the completion schematic diagram of the anti-channelling particle of filling.
Figure 15 be embodiment 3 being lowered in the multilayer straight well of quartz sand filling completion outside wire-wrapped screen and screen casing, set up the process schematic diagram of second group of block ring.
Figure 16 is the completion structure figure that embodiment 3 has set up 2 groups of block rings.
Figure 17 be embodiment 3 being lowered in the multilayer straight well of quartz sand filling completion outside wire-wrapped screen and screen casing, set up the process schematic diagram of 2 groups of block rings simultaneously.
The specific embodiment
embodiment 1
For multilayer straight well; when interlayer permeability contrast very large; to such an extent as to the anti-channelling particle ring of filling is can't thoroughly solve interlayer contradiction problem time; in the outer anti-channelling particle ring of flow control filter pipe column, injected choked flow WATER AS FLOW MEDIUM mud in the past; thereby set up several block rings, guarantee thoroughly to solve interlayer contradiction.
Set up the process of block ring as shown in Figure 8.In Fig. 8,8-1 is the bore hole borehole wall, and 8-2 is flow control filter pipe column, and 8-3 is anti-channelling particle, and 8-4 is oil-producing formation, and 8-5 is water-yielding stratum, and 8-6 is oil-producing formation.
Set up completion structure after block ring as shown in Figure 9, in Fig. 9,9-1 is the bore hole borehole wall, and 9-2 is flow control filter pipe column, and 9-3 is anti-channelling particle, and 9-4 is oil-producing formation, and 9-5 is water-yielding stratum, and 9-6 is oil-producing formation, and 9-7 is that the choked flow medium injecting has formed block ring.
Concrete embodiment: be lowered to the injection phase of arriving design with the pipe string of two groups of instruments, in instrument pipe string, inject the cement paste preparing, two hydraulic buckling packer inflations, when pipe string internal pressure is greater than the pressure of constant pressure valve setting, cement paste is just squeezed in pipe string, by flow control strainer, enter in anti-channelling grain packing ring.Inject 40 liters (suppose 8-1/2 " the bore hole borehole wall; 5-1/2 " flow control tubing string, the length of block ring is 2m, and the degree of porosity of anti-channelling particle is 30%, needs 15 liters of the volumes of material water mud) after, pressure release in instrument pipe string, constant pressure valve cuts out, and two hydraulic buckling packers shrink, and above carry instrument pipe string, when constant pressure valve arrives behind the injection phase of design, the samely repeat to inject link; After several block rings have all been set up, instrument pipe string is proposed from pit shaft.After about 8 hours, the cement paste that injects anti-channelling grain packing ring will be frozen into solid automatically, forms stable block ring, as shown in Figure 9.
The producing well of bottom water reservoir, for the cone that prevents end water enters, the in the situation that annular space being filled with gravel outside composite screen pipe completion and screen casing, carries subparticle with carrying liquid, and Paris white medium is set up singly successively block ring on gravel ring.
Concrete embodiment: as shown in figure 10, in Figure 10,10-1 is the bore hole borehole wall, and 10-2 is gravel ring, and 10-3 is plain filter tubing string, be lowered to the pipe string (plug+cup packer 10-4+ through hole inlet 10-5+ cup packer 10-6+ connects tubing string to well head) with one group of instrument, to the injection phase of design, in instrument pipe string, inject the calcium carbonate soln preparing, calcium carbonate soln is just squeezed in pipe string, by composite screen pipe, enter in gravel particle packing ring.Inject 150 liters (suppose 8-1/2 " the bore hole borehole wall, 5-1/2 " composite screen pipe, the length of block ring is 2m, the degree of porosity of gravel ring is 30%, the volume that needs material Paris white is 15 liters, according to 10% calcium carbonate soln concentration, approximately 150 liters of the volumes of injection gravel ring) after, on carry instrument pipe string, as shown in figure 11, in Figure 11, 11-1 is the bore hole borehole wall, 11-2 is gravel ring, 11-3 is plain filter tubing string, 11-4 is cup packer, 11-5 is through hole inlet, 11-6 is cup packer, 11-7 is the block ring having established, when through hole inlet arrives behind another injection phase of design, the samely repeat to inject link, after several block rings that need in whole pit shaft have all been set up, instrument pipe string is proposed from pit shaft.Inject gravel nuclear carbon acid calcium and form stable block ring together with gravel.As shown in figure 12.In Figure 12,12-1 is the bore hole borehole wall, and 12-2 is gravel ring, and 12-3 is plain filter tubing string, and 12-4 is the block ring of setting up in gravel ring.
With the pipe string structure of one group of instrument as shown in Figure 6, in Fig. 6,6-1 is seal, and 6-2 is inlet, and 6-3 is seal.Wherein, seal is cup packer, and inlet is through hole.
embodiment 3
For multilayer straight well; wire-wrapped screen and quartz sand filling completion in pit shaft, have been lowered to; and contradiction is between layers more serious; or interlayer is between layers thin especially, the channelling at this moment forming on quartz sand packing ring and anti-channelling particle ring directly has influence on the effect of sectional flow control technology.Simultaneously on quartz sand packing ring and anti-channelling particle ring, set up 2 groups of block rings with gel media simultaneously.As shown in figure 16.16-1 is two groups of block rings having set up.
Concrete embodiment has following two kinds: first method: step 1, as shown in figure 13, for the pit shaft that is lowered to plain filter tubing string 13-1 and quartz sand 13-2 filling completion, be lowered to the pipe string with many groups instrument, with the pipe string structure of many groups instrument as shown in Figure 7, in Fig. 7,7-1 is first group of instrument, 7-N is N group instrument, and every group of instrument consists of seal 7-1-1, inlet 7-1-2 and seal 7-1-3.Seal is hydraulic buckling packer, and inlet is constant pressure valve.The injection phase of design will be lowered into the pipe string of many groups instrument, in instrument pipe string, inject the gel media preparing, hydraulic buckling packer inflation, when pipe string internal pressure is greater than the pressure of constant pressure valve setting, gel media is just squeezed in pipe string, by wire-wrapped screen, enter in quartz sand packing ring.Inject 15*N liter (suppose 8-1/2 " the bore hole borehole wall; 5-1/2 " wire-wrapped screen, the length of block ring is 2m, the degree of porosity of quartz sand ring is 30%, need 15 liters of the volumes of material) after, pressure release in instrument pipe string, all constant pressure valves cut out, hydraulic buckling packer shrinks, and instrument pipe string is proposed from pit shaft.After about 12 hours, the gel that injects quartz sand packing ring will be frozen into solid automatically, forms 1 group of stable block ring, as shown in figure 14.Step 2, as shown in figure 14, after 1 group of block ring has been set up, toward be lowered in pit shaft 2-7/8 " flow control filter pipe column, and the anti-channelling particle of the annular pack between flow control filter pipe column and plain filter tubing string, forms anti-channelling grain packing ring.In Figure 14,14-1 is the bore hole borehole wall, and 14-2 is plain filter tubing string, and 14-3 is quartz sand ring, 14-4 is the block ring of having built up, and 14-5 is flow control filter pipe column, and 14-6 is anti-channelling particle, 14-7 is oil-producing formation, and 14-8 is water-yielding stratum, and 14-9 is oil-producing formation.Step 3, as shown in figure 15, in Figure 15,15-1 is the bore hole borehole wall, 15-2 is plain filter tubing string, and 15-3 is quartz sand ring, and 15-4 is flow control filter pipe column, and 15-5 is anti-channelling particle, 15-6 is oil-producing formation, and 15-7 is water-yielding stratum, and 15-8 is oil-producing formation, and 15-9 is the block ring of having built up.In the pit shaft shown in Figure 14, be lowered to again the pipe string (plug+many groups instrument (hydraulic buckling packer+constant pressure valve+hydraulic buckling packer)+connection tubing string is to well head) with the more small-sized of many groups instrument, to the injection phase of design, in instrument pipe string, inject the gel media preparing, hydraulic buckling packer inflation, when pipe string internal pressure is greater than the pressure of constant pressure valve setting, gel media is just squeezed in pipe string, by flow control screen pipe, enters in anti-channelling grain packing ring.Inject 5*N liter (suppose 5-1/2 " wire-wrapped screen; 2-7/8 " water-control sieve tube, the length of block ring is 2m, the degree of porosity of anti-channelling grain packing ring is 30%, need 5 liters of the volumes of material) after, pressure release in instrument pipe string, all constant pressure valves cut out, hydraulic buckling packer shrinks, and instrument pipe string is proposed from pit shaft.After about 12 hours, the gel that injects anti-channelling grain packing ring will be frozen into solid automatically, forms another and organizes stable block ring.So as shown in figure 16, in whole pit shaft, form 2 groups of stable block rings, thoroughly solved crossflow, realized sectional flow control.
Second method: step 1, being lowered in the pit shaft of wire-wrapped screen and quartz sand filling completion, be lowered to 2-7/8 " flow control filter pipe column, the then anti-channelling particle of filling between flow control filter pipe column and wire-wrapped screen tubing string, as shown in Figure 5.Step 2, as shown in figure 17, in Figure 17,17-1 is the bore hole borehole wall, and 17-2 is plain filter tubing string, and 17-3 is quartz sand ring, and 17-4 is flow control filter pipe column, and 17-5 is anti-channelling particle, and 17-6 is oil-producing formation, and 17-7 is water-yielding stratum, 17-8 is oil-producing formation.In above-mentioned pit shaft, be lowered to the pipe string (plug+many groups instrument (hydraulic buckling packer+constant pressure valve+hydraulic buckling packer)+connection tubing string is to well head) with many groups instrument, to the injection phase of design, in instrument pipe string, inject the gel media preparing, hydraulic buckling packer inflation, when pipe string internal pressure is greater than the pressure of constant pressure valve setting, gel media is just squeezed in pipe string, by flow control screen pipe, enters in anti-channelling grain packing ring; And then through wire-wrapped screen, enter in quartz sand packing ring.Inject 25*N liter (suppose 8-1/2 " the bore hole borehole wall; 5-1/2 " wire-wrapped screen, 2-7/8 " flow control screen pipe; the length of block ring is 2m, the degree of porosity of quartz sand ring and anti-channelling grain packing ring is 30%, needs 25 liters of the volumes of material) after; pressure release in instrument pipe string; all constant pressure valves cut out, hydraulic buckling packer shrinks, and instrument pipe string is proposed from pit shaft.After about 12 hours, the gel that injects quartz sand packing ring and anti-channelling grain packing ring will be frozen into solid automatically, forms 2 groups of stable block rings, as shown in figure 16 simultaneously.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (9)
1. a completion structure of setting up packing in the outer packing ring of Oil/gas Well strainer tubing string, comprises the Oil/gas Well borehole wall and strainer tubing string, between the Oil/gas Well borehole wall and strainer tubing string, forms grain packing ring; It is characterized in that: in the grain packing ring between the Oil/gas Well borehole wall and strainer tubing string, be provided with at least one block ring.
2. in the outer packing ring of Oil/gas Well strainer tubing string as claimed in claim 1, set up the completion structure of packing, it is characterized in that: the material of setting up block ring is choked flow medium, described choked flow medium is without oozing medium, described nothing is oozed medium for flowing in advance, the liquid that can solidify under certain condition or after certain hour.
3. the completion structure of setting up packing in the outer packing ring of Oil/gas Well strainer tubing string as claimed in claim 2, is characterized in that: it is gel or cement paste that described nothing is oozed medium.
4. the completion structure of setting up packing in the outer packing ring of Oil/gas Well strainer tubing string as claimed in claim 1, is characterized in that: the material of setting up block ring is choked flow medium, described choked flow medium is low permeability media.
5. the completion structure of setting up packing in the outer packing ring of Oil/gas Well strainer tubing string as claimed in claim 4, is characterized in that: described low permeability media is subparticle, described subparticle is Paris white.
6. a method of setting up packing in the outer packing ring of Oil/gas Well strainer tubing string, is characterized in that, described method be toward injection choked flow medium in compartment of terrain in grain packing ring, formation block ring, and concrete steps are:
1) toward being lowered to pipe string with one group of instrument in pit shaft to design attitude, concrete one group of instrument is by seal, inlet, seal composition; Described seal is packer accessory, and described packer accessory is hydraulic buckling packer or cup packer, and described inlet is constant pressure valve or through hole;
2) in instrument pipe string, inject the choked flow medium preparing, choked flow medium, by inlet, by strainer, enters grain packing ring, the injection of complete design amount choked flow medium, and a block ring has been set up;
3) Move tool pipe string certain distance, sets up block ring equally again, successively according to design, sets up all block rings in whole pit shaft;
4) after choked flow medium has injected, instrument pipe string is proposed smoothly;
5) choked flow medium enters after grain packing ring, forms some sections of stable and firm block rings in grain packing ring.
7. a method of setting up packing in the outer packing ring of Oil/gas Well strainer tubing string, is characterized in that, described method is injected choked flow medium for compartment of terrain in grain packing ring simultaneously, forms some sections of block rings, and concrete steps are:
1) along pit shaft, according to the quantity of design, in pit shaft, be lowered to pipe string be comprised of some groups of instruments to design attitude, concrete every group of instrument be by seal, inlet, and seal forms;
2) in instrument pipe string, inject the choked flow medium preparing, every group of instrument started working simultaneously, and choked flow medium passes through inlet, pass through strainer, enter grain packing ring, after the injection rate of design completes, at this moment along pit shaft, according to the quantity of design is disposable, set up some sections of block rings; While needing, Move tool pipe string, the rest may be inferred, sets up equally more some sections of block rings;
3) after choked flow medium has injected, instrument pipe string is proposed smoothly;
4) choked flow medium enters after grain packing ring, forms some sections of stable and firm block rings in grain packing ring.
8. in the outer grain packing ring of the Oil/gas Well strainer tubing string as described in claim 6 or 7, set up the method for packing, it is characterized in that, the spatial dimension that choked flow medium forms block ring includes but not limited to following three kinds: the first can be entered in the anti-channelling grain packing ring outside flow control strainer and be formed block ring by flow control strainer, and the second can be entered in the outer grain packing ring of plain filter and be formed block ring by plain filter; The third can be entered in anti-channelling grain packing ring and be formed block ring by flow control strainer, then by plain filter, enter in the outer grain packing ring of tubing string and form block ring, in the grain packing ring outside anti-channelling grain packing ring and the plain filter outside flow control strainer, set up two groups of block rings simultaneously.
9. the method for setting up packing in the outer grain packing ring of Oil/gas Well strainer tubing string as claimed in claim 8, is characterized in that, described constant pressure valve, and when its inside and outside differential pressure is greater than setting pressure, constant pressure valve is opened; When its inside and outside differential pressure is not more than setting pressure, constant pressure valve cuts out; Its effect is after guaranteeing that hydraulic buckling packer inflation puts in place, and the medium that inject grain packing ring just flows toward grain packing ring in pipe string; Described hydraulic buckling packer, just starts to expand when its inside and outside differential pressure is greater than zero, and when inside and outside differential pressure is greater than setting pressure, hydraulic buckling packer could expand and put in place; When its inside and outside differential pressure is zero, hydraulic buckling packer can be retracted to and approach original size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013598.8A CN103726813B (en) | 2014-01-13 | 2014-01-13 | In the outer packing ring of Oil/gas Well filter tubing string, set up the method for packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410013598.8A CN103726813B (en) | 2014-01-13 | 2014-01-13 | In the outer packing ring of Oil/gas Well filter tubing string, set up the method for packing |
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| CN105003223A (en) * | 2014-04-24 | 2015-10-28 | 安东柏林石油科技（北京）有限公司 | Method for effectively improving portability of packing particles after contact with oil |
| CN106555574A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | Sand control, steam injection integrated apparatus and method |
| CN107060703A (en) * | 2017-06-28 | 2017-08-18 | 中国石油集团渤海钻探工程有限公司 | Multiple expansion sand control screen well completion technique tubular pile in a kind of sleeve pipe |
| CN109538168A (en) * | 2018-11-15 | 2019-03-29 | 成都百胜野牛科技有限公司 | A kind of fluid separation apparatus and hoistway structure |
| CN110173230A (en) * | 2019-06-06 | 2019-08-27 | 安东柏林石油科技（北京）有限公司 | Prevent artificial borehole wall, forming method and the completion structure of shale layer mud output or channelling |
| CN110424912A (en) * | 2019-08-06 | 2019-11-08 | 安东柏林石油科技（北京）有限公司 | Method, the row's of returning service unit and the completion structure of tubing string replacement filling layer are not changed |
| WO2021022909A1 (en) * | 2019-08-06 | 2021-02-11 | 安东柏林石油科技（北京）有限公司 | Method for achieving water self-plugging by means of stacking packer particles, water self-plugging pipe string, and well completion structure |
| CN113236182A (en) * | 2021-06-28 | 2021-08-10 | 安东柏林石油科技（北京）有限公司 | Resistance increasing device and well completion structure for improving axial packing effect of continuous packing body along shaft |
| CN113374451A (en) * | 2021-07-13 | 2021-09-10 | 中国海洋石油集团有限公司 | Horizontal well can be thrown and drag for layering accuse water pipe post |
| CN113833437A (en) * | 2021-09-24 | 2021-12-24 | 安东柏林石油科技（北京）有限公司 | Method and structure for improving axial anti-channeling capacity in underground annulus |
| WO2022183898A1 (en) * | 2021-03-04 | 2022-09-09 | 安东柏林石油科技（北京）有限公司 | Method for operating water injection well, and water injection well |
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| CN105003223A (en) * | 2014-04-24 | 2015-10-28 | 安东柏林石油科技（北京）有限公司 | Method for effectively improving portability of packing particles after contact with oil |
| CN105003223B (en) * | 2014-04-24 | 2017-11-21 | 安东柏林石油科技（北京）有限公司 | A kind of method for insulating particle portability energy effectively improved after contact oil |
| CN106555574A (en) * | 2015-09-25 | 2017-04-05 | 中国石油化工股份有限公司 | Sand control, steam injection integrated apparatus and method |
| CN107060703A (en) * | 2017-06-28 | 2017-08-18 | 中国石油集团渤海钻探工程有限公司 | Multiple expansion sand control screen well completion technique tubular pile in a kind of sleeve pipe |
| CN109538168B (en) * | 2018-11-15 | 2021-04-13 | 成都百胜野牛科技有限公司 | Fluid separation device and well structure |
| CN109538168A (en) * | 2018-11-15 | 2019-03-29 | 成都百胜野牛科技有限公司 | A kind of fluid separation apparatus and hoistway structure |
| CN110173230A (en) * | 2019-06-06 | 2019-08-27 | 安东柏林石油科技（北京）有限公司 | Prevent artificial borehole wall, forming method and the completion structure of shale layer mud output or channelling |
| WO2020244303A1 (en) * | 2019-06-06 | 2020-12-10 | 安东柏林石油科技（北京）有限公司 | Artificial borehole wall for preventing mudstone layer mud from being produced or channeling, forming method and well completion structure |
| CN110424912A (en) * | 2019-08-06 | 2019-11-08 | 安东柏林石油科技（北京）有限公司 | Method, the row's of returning service unit and the completion structure of tubing string replacement filling layer are not changed |
| WO2021022909A1 (en) * | 2019-08-06 | 2021-02-11 | 安东柏林石油科技（北京）有限公司 | Method for achieving water self-plugging by means of stacking packer particles, water self-plugging pipe string, and well completion structure |
| WO2022183898A1 (en) * | 2021-03-04 | 2022-09-09 | 安东柏林石油科技（北京）有限公司 | Method for operating water injection well, and water injection well |
| CN113236182A (en) * | 2021-06-28 | 2021-08-10 | 安东柏林石油科技（北京）有限公司 | Resistance increasing device and well completion structure for improving axial packing effect of continuous packing body along shaft |
| CN113374451A (en) * | 2021-07-13 | 2021-09-10 | 中国海洋石油集团有限公司 | Horizontal well can be thrown and drag for layering accuse water pipe post |
| CN113833437A (en) * | 2021-09-24 | 2021-12-24 | 安东柏林石油科技（北京）有限公司 | Method and structure for improving axial anti-channeling capacity in underground annulus |
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