CN102606126A - Non-planar network fracturing control method for fractured reservoir - Google Patents
Non-planar network fracturing control method for fractured reservoir Download PDFInfo
- Publication number
- CN102606126A CN102606126A CN2012100826173A CN201210082617A CN102606126A CN 102606126 A CN102606126 A CN 102606126A CN 2012100826173 A CN2012100826173 A CN 2012100826173A CN 201210082617 A CN201210082617 A CN 201210082617A CN 102606126 A CN102606126 A CN 102606126A
- Authority
- CN
- China
- Prior art keywords
- fracture
- crack
- intrinsic
- nonplanar
- reservoir
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses a non-planar network fracturing construction control method for a fractured reservoir, which includes the step: firstly, performing pre-fracturing evaluation by (1) obtaining the intrinsic fracture development degree and directions according to FMI (formation micro-scanner image) logging and conventional logging data, (2) determining man-made fracture directions, (3) judging the angle relation between man-made fractures and intrinsic fractures, and (4) judging the non-planar network fracturing formation adequacy; secondly, establishing a stress field inversion constrained optimization model by utilizing a numerical value inversion method combining multi-well constrained optimization and finite elements so as to obtain numerical simulation of three-dimensional geostress states and rock mechanical parameters of a fractured reservoir area; thirdly, selecting corresponding construction parameters, and fracturing strata so as to force the intrinsic fractures and holes to open as large as possible; and fourthly, according to the opened equivalent number and openness of the intrinsic fractures explained by test fracturing, selecting grain sizes and use amount of propping agents matched with the intrinsic fractures or the holes, and leading fracturing fluid carrying the propping agents to enter the intrinsic fractures or the holes.
Description
Technical field
The present invention relates to a kind of fracture-type reservoir nonplanar network crack pressing crack construction control method.
Background technology
For the fracture-type reservoir of intrinsic fracture growth, during fracturing, because the tensile strength of intrinsic fracture is less than the tensile strength of rock; Under certain net pressure condition; Intrinsic fracture can preferentially be opened and be interconnected, and causes a large amount of leak-offs of fracturing fluid, causes major fracture to form difficulty.This type reservoir intrinsic fracture system occurs mostly in groups, usually is that many groups crack exists simultaneously, and each bar crack is all surrounded by other crack, also by other group crack cutting, near it, also has the fractue spacing of even lower level sometimes.More conventional pressure break adopts flour sand/pottery slug to suppress intrinsic fracture and opens; The way of using resin particle to handle intrinsic fracture is also arranged; These methods all are to suppress the intrinsic fracture expansion; Guarantee that major fracture extends to the master, even part has been opened intrinsic fracture in fracturing process, also can quick-make under the closure stress effect.
To fracture-type reservoir, the pressure break capacity of well is influenced by the size in the territory, intrinsic fracture system control area of major fracture communication mainly.Behind the fracture-type reservoir fracturing reform, the output of short-term is from the major fracture of high flow conductivity, and long-term output then mainly depends on the intrinsic fracture network.Conventional pressure break and fracturing yield increasing form contradiction.Therefore, increase substantially the fractured well correctional effect, will guarantee that the fracture pattern that pressure break forms is the nonplanar network crack, to link up bigger seepage flow zone and farther crack operating distance.
Summary of the invention
The technical problem that the present invention will solve is intended to solve the contradiction that the conventional fracturing of fracture-type reservoir and reservoir reconstruction increase production target, provides a kind of and can guarantee the short-term high yield nonplanar network crack pressing crack construction control method of stable yields for a long time again.
Technical scheme of the present invention is:
A kind of fracture-type reservoir nonplanar network crack pressing crack construction control method may further comprise the steps:
A) press preceding the evaluation, comprising: intrinsic fracture development degree and orientation are obtained according to FMI imaging logging and conventional logging data in (1); (2) confirm the man-made fracture orientation; (3) angular relationship of judgement man-made fracture and intrinsic fracture; (4) judge the abundant degree that nonplanar network crack pressure break forms;
B) the numerical inversion method of utilizing many wells constrained optimization and finite element to combine is set up the INVERSION OF STRESS FIELD Constraint Anchored Optimization, obtains fracture reservoir zone three-dimensional ground stress state and the simulation of rock mechanics parameter values;
C) select corresponding construction parameter, press off the stratum and force intrinsic fracture or hole opens as far as possible;
D) intrinsic fracture of explaining according to mini-frac is opened equivalent bar number and aperture, and the proppant particle diameter and the consumption of selection and intrinsic fracture or hole coupling carry proppant with fracturing fluid and get into intrinsic fracture or hole;
E) closing up of cracks is treated in termination of pumping.
According to steps A) in step (1) development degree that draws intrinsic fracture when being the obsolete low permeability reservoir in crack; When two during to horizontal principal stress difference≤5MPa; Also need utilize the construction of big discharge capacity, improve net pressure value in the crack, make the net pressure value greater than two to the horizontal principal stress difference.
According to steps A) in step (1) development degree that draws intrinsic fracture when being the low permeability reservoir of the little growth in crack; Also need in fracturing fluid, add the reservoir protection additive; Use the large discharge pump that surpasses reservoir pore space crack filtration capacity to annotate, shear crack and more microcrack are linked up.
The definite of the man-made fracture of the step said steps A) (2) obtains through borehole wall avalanche analytical method, and borehole wall avalanche direction is the minimum level principal direction of stress.
The confirming of the man-made fracture of the step said steps A) (2) obtains through drilling induced seam analytical method, has parallel on the FMI image and is 180 ° of symmetrical high angle fracture, and direction is the maximum horizontal principal stress direction.
The confirming of the man-made fracture of the step said steps A) (2) obtains through the dipole shear wave logging method, and dipole shear wave logging is measured the shear wave anisotropy on stratum, and the fast transverse wave azimuth is corresponding to horizontal biggest principal stress direction or tomography, fracture strike.
Described step D) fracturing fluid in requires the initial stage can not form filter cake, relies on its elasticity to take sand.
Described step D) the described fracturing fluid of the fracturing fluid in adopts APV fracturing fluid system.
Described step D) the described proppant of the fracturing fluid in is a haydite.
Specify as follows:
1, fracturing nonplanar network crack formation condition
1. with the influence of biggest principal stress direction angle theta
Shown in Fig. 1 a, Fig. 1 b, under high θ angle and medium stress difference situation, hydraulic fracture directly passes intrinsic fracture, along former direction expansion.
Illustrate like Fig. 2, under low θ angle (30 °) and medium stress difference situation, hydraulic fracture turns to, and extends along intrinsic fracture.
Fig. 3 is that hydraulic fracture is linked up intrinsic fracture boundary plate under different θ angle and the horizontal stress difference situation;
Horizontal principal stress difference and θ angle are the major influence factors of decision hydraulic fracture trend and form.From the result of rock experimental simulation, the θ angle is during greater than 60 °, and hydraulic fracture generally can directly pass intrinsic fracture and continue to extend, and does not possess the condition that forms the nonplanar network crack.
In conjunction with the solid coupled wave theory analog result of rock experimental result and limited flow filament: when man-made fracture and intrinsic fracture under the less situation of angle (＜30 °;＞10 °); No matter the horizontal stress difference is much; Intrinsic fracture all can open, and changes original extension path, has created condition for forming the nonplanar network crack; And be (30 ° to 60 °) under the medium situation at angle; Under low-level stress difference situation; Intrinsic fracture can open, and have the condition that forms the nonplanar network crack, and intrinsic fracture will can not open under heavily stressed poor situation; Man-made fracture directly passes intrinsic fracture and extends forward, does not have the condition that forms the nonplanar network crack; For (＞60 °) under the bigger situation of angle, no matter the horizontal stress difference is much, and intrinsic fracture can not open and change original extension path, and man-made fracture directly passes intrinsic fracture and extends forward, does not have the condition that forms the nonplanar network crack.
2. mechanism is extended in the crack initiation in crack under the different stress
Fig. 4 is the crack crack initiation and extension characteristic sketch map under the different confined pressure effects;
When level two to stress near or when equal, the multi-direction crack initiation of hydraulic fracture, to extend characteristic obvious.
3. different intrinsic fracture combinations are to the influence of nonplanar network fracture propagation
Two groups of conjugation shear crack combinations:
Be characterized in reservoir being cut into interrupted quadrangle or bar shaped by two groups of conjugation shear cracks, the direction in two groups of cracks be mainly NEE and NNW to, be main with high angle fracture.Because NEE is to the angle very little (generally in 10 °) of crack and σ 1; And NNW to the angle of crack and σ 1 more than 70 °, so during pressure break, under various stress differences and rock tensile strength condition; Fracturing fracture is all incited somebody to action at first along NEE to formation, and NNW can be movable to the crack.Fracture development direction when extending to from NEE to the crack far-end has two kinds of situation.
NEE between the wall scroll crack by secondary crack locally connected; Pressure break enlarges secondary crack; And two NEE are connected to the crack, finally form a trend and wall scroll NEE to the fracture strike angle of cut be about 10 °, direction ratio wall scroll NEE to fracture strike slightly the inclined to one side fracturing fracture in north (Fig. 5 a).σ 1 is a biggest principal stress direction among the figure, and dotted line is represented fracturing fracture most probable direction (down together).
NEE does not have connection between the wall scroll crack, pressure break forms newborn crack, the trend newborn crack consistent with σ 1 direction at NEE to the far-end in crack and extends forward until finally trend of formation and wall scroll NEE have-Ding the angle of cut, the direction ratio NEE fracturing fracture (Fig. 5 b) to the nearly EW of wall scroll fracture strike trend by north, overall to fracture strike to the crack with next bar NEE.
Three groups of crack combinations:
Be characterized in by three groups of cracks reservoir being cut into interrupted triangle, trapezoidal or hexagon, fracture spacing is higher relatively; Crack combination be mainly NEE, NNW, NW to three groups or NEE, NNW, NE to three groups, be main with high angle fracture.
When the crack is combined as three groups of NEE, NNW, NE; Because NEE is to the angle minimum (generally in 10 °) of crack and σ 1; NE to the crack take second place (with the angle of σ 1 be 30-40 °), NWW is to the angle of crack and σ 1 maximum (70-90 °), so during pressure break; Under different stress differences and rock tensile strength condition, fracturing fracture will be at first along NEE to formation.Two kinds of situation of fracture development direction when extending to NEE in Fig. 5 to the crack far-end, when condition satisfies, also can be along NE to fracture development, making the overall trend of fracturing fracture is that NE is to (Fig. 6 is a).
When crack combination is mainly three groups of NEE, NNW, NW; Since NW to the angle of crack and σ 1 between 50-70 °, just possibility activity when only very little or rock tensile strength is big in stress difference, therefore; Two kinds of situation of fracture development direction when extending to NEE in Fig. 5 to the crack far-end; When condition satisfies, also can be along NW to fracture development, make the overall trend of fracturing fracture for nearly EW or SEE to (Fig. 6 b).
Four groups and four groups of above crack combinations:
Be characterized in by four groups of cracks reservoir being cut into interrupted triangle, rhombus or polygon, fracture spacing is relatively also higher.Fractuer direction be mainly NEE, NNW, NE and NW to, wherein NEE and NNW are main to the crack with high angle fracture, NE and NW are high angle fracture (Fig. 7) to the crack part.
At this moment; Because the increase of crack group number; The also corresponding increase of mobilizable under certain condition crack group number, the bearing of trend of fracturing fracture have nearly EW, NE, NW to etc. multiple maybe, and because many groups cracks possibly to occur movable simultaneously; Make fracturing fracture have bifurcation, form the fracturing fracture band.
4. the intrinsic fracture development degree is to the influence of on-plane surface fracture network expansion
As shown in Figure 8ly go out, when natural crack was pressed off, its development degree was to the material impact that is formed with of fracture network.
2, fracturing fluid viscosity and operational discharge capacity are to the influence of nonplanar network crack formation
1. the influence of fracturing fluid viscosity
Fracturing fluid viscosity not simultaneously, the response difference of pressure curve is (shown in Fig. 9) obviously.Low viscous pressure curve big rise and fall, full-bodied pressure break curve rises and falls less.Adopt high viscosity fracturing fluid, the crack kenel is more satisfactory, the fracture faces smoother, and hydraulic fracture passes the intrinsic fracture that presets easily; And when adopting low viscosity of the fracturing fluid, fracture faces is very coarse, and it is apparent in view to rise and fall, and hydraulic fracture extends along the intrinsic fracture direction easily.
2. the influence of operational discharge capacity
Figure 10 is low, and discharge capacity is linked up saturated intrinsic fracture lab diagram;
Yost thinks that through the extension of analyzing the fractured reservoir hydraulic fracture near horizontal wellbore high discharge capacity helps to produce new crack, and low discharge capacity helps opening of intrinsic fracture.Core experiment has also been verified this point.
During high discharge capacity pressure break, the crack kenel is more satisfactory, the fracture faces smoother, and hydraulic fracture passes the intrinsic fracture that presets easily; And adopt when hanging down the discharge capacity pressure break, fracture faces is very coarse, and it is apparent in view to rise and fall, and hydraulic fracture extends along the intrinsic fracture direction easily.
3, nonplanar network crack pressing crack construction control technology
(1) presses preceding Evaluation and Control technology
1. intrinsic fracture orientation and occurrence confirms
Shown in figure 11, through analyzing the viscous remanence direction of core sample, can obtain growth orientation and inclination angle, the bar number of intrinsic fracture.
Use imaging logging and conventional logging means, can carry out quantitative Analysis (Figure 12) the tendency of intrinsic fracture, inclination angle, fracture spacing, fracture aperture, fracture porosity etc.
2. the man-made fracture orientation confirms
For individual well, the definite of artificial major fracture orientation can realize through following three kinds of methods:
A: borehole wall avalanche is analyzed
Borehole wall avalanche direction is minimum level principal direction of stress now, and different interval subterranean wells wall avalanche directions also have certain variation simultaneously.
B: the drilling induced seam is analyzed
Because paleostructure stress does not obtain discharging, thereby produce one group of relevant with it seam of inducing, have parallel on the FMI image and be 180.The symmetry high angle fracture.Direction is the maximum horizontal principal stress direction.
C: dipole shear wave logging
Dipole shear wave logging can be measured the shear wave anisotropy on stratum.Cause the anisotropic principal element of shear wave to comprise the influence of unbalanced, open fissure, tomography and the oval well of horizontal direction geostatic stress.The fast transverse wave azimuth is corresponding to horizontal biggest principal stress direction or tomography, fracture strike.
3. reservoir three-dimensional ground stress and rock mechanics parameter values simulation
Figure 13 is the continuous variation diagram of fracture pressure three dimensions, and Figure 14 is horizontal major principal stress isopleth map, in conjunction with Figure 13,14, sets forth as follows:
The measuring technique of geostatic stress has developed and a series of measuring technology to deep formation, as minute-pressure split, down-hole microseism, directed natural gamma ray logging, ASR, difference strain, drilling process and get the core process induce seam analysis, core velocity of wave anisotropy, paleomagnetism etc.Yet the cost of core experiment method and on-the-spot test method is all very high.
The method of using log data computing rock mechanics parameter and geostatic stress can obtain the serial section on vertical.But, ignored thermal stress, tectonic stress iso-stress in the existing layering geostatic stress computation model, only considered vertical stress, the result who calculates does not also meet reality.If the regional structure effect is strong, the error of calculated stress and measured stress is bigger.Tectonic stress is relevant with a plurality of variablees such as plasticity of geological structure, reservoir pressure, sand body distribution, rock, is not and well location variation simple correlation.
In order to obtain reservoir three-dimensional ground stress and rock mechanics parameter profile comparatively accurately; The numerical inversion method of utilizing many wells constrained optimization and finite element to combine; Set up the INVERSION OF STRESS FIELD Constraint Anchored Optimization, thereby obtain zone (containing well) geostatic stress size and rock mechanics parameter 3D data volume.
4. on-plane surface fracture network mini-frac identification
Figure 15 is four kinds of typical nonplanar network crack G function stack derivative figure, sets forth as follows in conjunction with Figure 15:
Field by using intrinsic fracture developmental index is estimated the development degree of intrinsic fracture.If G function stack derivative curve presents " epirelief " before closing up of cracks point, show that then reservoir has the characteristic that intrinsic fracture is grown.
Intrinsic fracture developmental index β
Fo:
To fracture-type reservoir, during the Incoercibility control of the viscosity of mainly being filtrated when leak-off, the compressibility of formation fluid, filter cake, leakoff coefficent is relevant with pressure, and leakoff coefficent is the function of pressure reduction:
In the formula: α
CpBe power filter coefficient.
If the intrinsic fracture opening pressure is P
Fo, leakoff coefficent is with change in pressure.Nolte and Smith provide the open net pressure of intrinsic fracture:
This moment, bottom pressure was:
In the formula: σ
H, maxMaximum horizontal principal stress MPa;
σ
H, minMinimum level main stress bar MPa;
The υ poisson's ratio;
P
cFracture closure pressure, MPa.
Generally the intrinsic fracture opening pressure is not a constant, and the leakoff coefficent that this moment, crack pressure was lower than opening pressure and crack pressure greater than the ratio of the leakoff coefficent of opening pressure are:
Wherein,
β
FoBe the intrinsic fracture developmental index, work as β
Fo＜0.26 o'clock, pressure and leakoff coefficent were uncorrelated, along with β
FoThe increase of value shows to have pressed off intrinsic fracture.
Intrinsic fracture is opened equivalent bar number and aperture:
Introduce time dependent three parameters: volume factor (describing crack quantity), leakoff coefficent (description fracturing fluid leak), aperture coefficient (description crack width), quantity, the leak-off of describing fracturing fracture reach the spread characteristic in the space.When the pressure characteristic of analog computation matches with actual measurement bottom pressure characteristic, can obtain the bar number of intrinsic fracture unlatching and open width through G function and stack derivative curve thereof.
Leakoff coefficent Ψ: when opened in natural crack or crack, of the fracturing fluid filter loss increased, and filtration rate and crack inside and outside differential pressure, formation parameter, of the fracturing fluid physical parameter are relevant.Leakoff coefficent Ψ representes to have intrinsic fracture to cause of the fracturing fluid leak-off velocity and this some place not to have the ratio of filtration rate on stratum of the unit length in intrinsic fracture or crack, so in the filter loss at dt point x place in the time:
Aperture coefficient ζ: since of the fracturing fluid effect, seam end rock expansion, the seam internal pressure is not enough to eliminate this rock reaction, so that the crack no longer is smooth, the seam end is narrow and small, makes the pressure loss increase.Aperture coefficient ζ representes to stitch the little ratio of reductions, its physical significance be fracturing fluid to the rock effect after, the ratio of crack width and desirable crack width because point effect mainly occurs near the seam end, so the pressure loss of available units length is represented:
Volume factor k
E: experiment is illustrated under the identical net pressure condition, and the many cracks width is significantly less than the width in single crack, and each bar crack width summation is greater than the width in single crack.Utilize the effective modulus of elasticity E on stratum when producing multiple cracking
Eff, volume factor k
EExplain the extension process of fracture-type reservoir " multiple cracking " jointly with the aperture coefficient, in its crack between wide and this point pressure of the seam of some relational expression be:
(2) pressing crack construction control technology
Figure 16 is that conventional pressure break supports section and the nonplanar network pressure break supports section contrast sketch map; Figure 17 a is that conventional hydraulic pressure splits sketch map; Figure 17 b is the sketch map of seam net pressure break+major fracture; Figure 17 c is the sketch map of extensive seam net pressure break; Figure 17 d is the sketch map of extensive seam net pressure break+major fracture; Figure 18 is four kinds of nonplanar network crack 3D sketch mapes; In conjunction with above-mentioned accompanying drawing; The pressing crack construction control technology is summarized as: according to the mini-frac explanation results, through injecting a large amount of high leak-offs, high resiliency, lightly gelled liquid, seek intrinsic fracture during pressure break; Use the medium of the proppant of suitable scale and particle diameter as fill sand; Make to expose to produce higher pressure reduction on the fracture surface, thereby make fracturing fluid and sand get into those open subsequently cracks, show crack hyper expanded until the bottom pressure variation.Its final purpose is to form natural seam network, thereby improves the stratum filtration area.
(3) low damage fracturing liquid system
The fracture-type reservoir of growing for intrinsic fracture, during fracturing, because the tensile strength of intrinsic fracture is less than the tensile strength of rock, under certain net pressure condition, intrinsic fracture can preferentially be opened and be interconnected.
Expand with full-bodied liquid with conventional pressure break and to widen major fracture different; Nonplanar network crack (comprise shear pressure break) is through injecting a large amount of high leak-offs, high resiliency, lightly gelled elastic liquid; This special liquid is to be used for seeking intrinsic fracture; Use the medium of a certain amount of particle diameter proppant simultaneously as fill sand; Make to expose to produce higher pressure reduction on the fracture surface, thereby make fracturing fluid and sand get into those open subsequently cracks, show crack hyper expanded until the bottom pressure variation.Its final purpose is to form the slit network, thereby improves the stratum filtration area.
APV fracturing fluid system is to be realized by special active agent molecule and structural promoter, and active agent molecule has certain being inclined to from dimerization, as far as possible its nonpolar part is kept apart with water.This micellar structure that forms is generally coccoid or is long bar-shaped.Yet in the time of in being dissolved in salt solution, the quaternary ammonium salt cationic type of long chain hydrocarbon groups structure (as contain) active agent molecule of some ad hoc structures can form a kind of micella that is similar to macromolecule ball of string structure, is different from conventional spherical or club shaped structure fully.The network structure of this micella has certain anti-twist ability, thereby gives the higher viscosity of liquid and use as fracturing fluid.When organic substance dissolves during to this micellar structure core, the destruction that finally can cause micellar structure is changed original network structure chondritic into and is reduced its viscosity.
The APV fracturing fluid has low viscosity, high resiliency, low frictional resistance, low residue, advantage such as anti-shearing, is that desirable on-plane surface fracture network pressure break is used working solution.
1. the APV fracturing fluid influences core permeability
Test injury and dynamic filtration performance that APV fracturing fluid, modification guanidine gum fracturing fluid cause respectively.Result such as following table.
Can find out that from natural core injury experiment the APV fracturing fluid all shows low injury characteristic to core, the injury rate of core is lower than 10%.
2. to the influence of supporting crack flow conductivity
Figure 19 is that APV fracturing liquid rubber-breaking liquid and 2%KCL flow of solution characteristic compare sketch map;
When APV fracturing liquid rubber-breaking liquid passes through the API guiding gutter; Show the flow behavior similar with 2%KCL solution; Ponding almost useless is described, its permeability is equivalent to more than 90% of 2%KCL solution always, explains that this fracturing fluid is very little to the injury of supporting filling bed.
3. of the fracturing fluid broken colloidality ability
In the fracturing fluid prescription, add 10% diesel oil, 10% water and 0.08% ammonium persulfate respectively, under corresponding temperature, experiment fracturing liquid rubber-breaking situation; 1#, 2#, 3# appearance is 0.5% host+0.35% assistant agent; The result shows; This fracturing fluid system runs into the broken glue of profit, is somewhat diluted, and viscoplasticity still exists but oxidant can make this system break glue.
4. of the fracturing fluid viscosity-temperature curve
See that from 90 ℃ of Figure 20,170S-1 rheology cutting performance curve the APV clean fracturing fluid has good anti-shear performance, shear after 120 minutes viscosity more than 40mPa.s, taking grittiness can be good.
5. of the fracturing fluid rheological parameter, leak-off data
| |
80 | 90 | 100 | 110 | 120′ | 130′ |
| n | 0.125 | 0.103 | 0.108 | 0.105 | 0.113 | 0.118 |
| K.Pa.S n | 38.4 | 32.4 | 31.8 | 31.5 | 30.6 | 28.3 |
| Index of correlation | 0.9636 | 0.9732 | 0.9845 | 0.9823 | 0.9912 | 0.9765 |
| Sample | Spurt loss volume (m 3/m 2) | Leakoff coefficent (m/min 1/2) | Filtration rate (m/min) |
| 1# | 2.3×10 -3 | 1.86×10 -4 | 3.4×10 -5 |
| 2# | 6.7×10 -3 | 1.74×10 -4 | 4.1×10 -5 |
| 3# | 9.5×10 -3 | 1.48×10 -4 | 4.2×10 -5 |
| The crosslinked HPG of boron | 8.1×10 -4 | 9.68×10 -4 | \ |
| The crosslinked HPG of organic boron | 4.2×10 -4 | 5.31×10 -4 | \ |
6. the surface and interface tension force of breaking glue solution under the normal temperature
| Sample number into |
1# | 2# | 3# | 4# | 5# |
| Surface tension (mN/m) | 27.52 | 27.13 | 26.82 | 26.65 | 25.14 |
| Interfacial tension (mN/m) | 0.68 | 0.62 | 0.53 | 0.42 | 0.35 |
7. of the fracturing fluid static state is hanged the grittiness ability
The mixed APV-DB clean fracturing fluid that haydite arranged is packed in the 100mL graduated cylinder into the settling rate of observing the haydite particle.The result shows that the settling rate of haydite is 0.038mm/s, can satisfy the requirement of outstanding sand.The sand ratio of employing 50%, 60%, 70% and 80% is taken sand test, the load fluid good fluidity, and outstanding grittiness can be good.
Implementation method one:
The nearly pit shaft nonplanar network crack stage: obtain intrinsic fracture development degree and orientation according to FMI imaging logging and conventional logging data before pressing; Obtain the man-made fracture orientation according to calliper log and velocity of wave anisotropic analysis; Make the angular relationship of man-made fracture and intrinsic fracture clear, judge the abundant degree that nonplanar network crack pressure break forms.Utilize finite element constrained inversion Modeling Technique Research reservoir zone vertically to go up the three-dimensional ground stress state.Select corresponding construction parameter; Press off the stratum and force intrinsic fracture or hole opens as far as possible; Intrinsic fracture according to mini-frac is explained is opened equivalent bar number and aperture; The proppant particle diameter and the consumption of selection and intrinsic fracture or hole coupling carry proppant and get into intrinsic fracture or hole with low viscosity, high resiliency, the low injury fracturing fluid of shear-stable.Closing up of cracks is treated in termination of pumping.Fracturing fluid requires the initial stage can not form filter cake, relies on its elasticity to take sand.
Major fracture+far-end nonplanar network crack stage: according to Theory of Fracture Mechanics, the rock stress that when bearing of trend splits with the crack of approaching vertical minimum principal stress direction, is overcome is less relatively, supported dose of filling easily.When waiting all cracks all to play pump again after the closure after the termination of pumping; These cracks can at first be opened under a lower pressure; Other crack can not opened or open difficult again; Fracturing fluid can more be concentrated like this acts on these cracks, obtains enough wide crack, thereby can allow higher sand ratio to pass through.Extend net pressure through the control major fracture, force its open distal end intrinsic fracture step by step in the extension process.Under the net pressure effect, nearly well fracture network also has extension simultaneously, but extension speed is significantly less than major fracture.
Implementation method two:
When the rock of crack periphery after pressure surpasses threshold pressure, sliding rupture promptly takes place, the slip of two crack matsurfaces makes perpendicular to the slit of seam face and expands.After the termination of pumping, open matsurface makes them can not slip back to original position again, is able to keep thereby shear the fracture permeabgility that expands.If this slippage two less to the horizontal principal stress difference, in the fracture extension process, keeps in the crack net pressure enough big except occurring in shear crack, when lithology or other situation change, just can form shear crack.Site test results shows no matter all can realize shear failure at horizontal joint or vertical lap seam reservoir.
To the obsolete low permeability reservoir in crack, when two to the horizontal principal stress difference hour (≤5MPa), utilize big discharge capacity construction; Improve net pressure value in the crack, make it difference, in the fracture extension process, possessed the deflection condition greater than two minimum level main stress bares; When extending, major fracture is hampered; Net pressure increases gradually in the seam, and acquiring a certain degree just can change the primary fracture direction, produces shear crack.The dislocation of rough fracture surface is supported, close with after still can keep certain slit, have certain flow conductivity.
Low permeability reservoir to the microcrack growth; In fracturing fluid, add an amount of respective additive and carry out reservoir protection; Use the big as far as possible displacement pump that surpasses reservoir pore space crack filtration capacity to annotate, shear crack and more microcrack are linked up, obtain good effect of increasing production.
Description of drawings
When combining accompanying drawing to consider; Through with reference to following detailed, can more completely understand the present invention better and learn wherein many attendant advantages easily, but accompanying drawing described herein is used to provide further understanding of the present invention; Constitute a part of the present invention; Illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute to improper qualification of the present invention, wherein:
Hydraulic fracture directly passed sketch map and the pictorial diagram that intrinsic fracture extends when Fig. 1 a was θ=90 °;
Hydraulic fracture directly passed the pictorial diagram that intrinsic fracture extends when Fig. 1 b was θ=90 °;
The pictorial diagram that hydraulic fracture extended along intrinsic fracture when Fig. 2 was θ=30 °;
Fig. 3 is that hydraulic fracture is linked up intrinsic fracture boundary plate under different θ angle and the horizontal stress difference situation;
Fig. 4 is the crack crack initiation and extension characteristic sketch map under the different confined pressure effects;
Fig. 5 a, Fig. 5 b are the sketch map of two groups of conjugation shear crack combinations;
Fig. 6 a, Fig. 6 b are the sketch map of three groups of conjugation shear crack combinations;
Fig. 7 is the sketch map of four groups of conjugation shear crack combinations;
Fig. 8 is the sketch map of intrinsic fracture development degree to the influence of nonplanar network fracture propagation;
Fig. 9 is the sketch map of high viscosity fracturing fluid (100CP) and low sticking fracturing fluid (10CP) pressure-responsive characteristic;
Figure 10 links up saturated intrinsic fracture lab diagram for low discharge capacity;
Figure 11 is sample viscous remanence analysis results figure;
Figure 12 is conventional logging and FMI imaging logging interpretation results figure;
Figure 13 is the continuous variation diagram of fracture pressure three dimensions;
Figure 14 is horizontal major principal stress isopleth map;
Figure 15 is four kinds of typical nonplanar network crack G function stack derivative figure;
Figure 16 is that conventional pressure break supports section and the nonplanar network pressure break supports section contrast sketch map;
Figure 17 a is that conventional hydraulic pressure splits sketch map;
Figure 17 b is the sketch map of seam net pressure break+major fracture;
Figure 17 c is the sketch map of extensive seam net pressure break;
Figure 17 d is the sketch map of extensive seam net pressure break+major fracture;
Figure 18 is four kinds of nonplanar network crack 3D sketch mapes;
Figure 19 is that APV fracturing liquid rubber-breaking liquid and 2%KCL flow of solution characteristic compare sketch map;
Figure 20 is of the fracturing fluid viscosity-temperature curve figure;
Figure 21 is the PuG101 well pressing crack construction curve map of embodiment 1;
Figure 22 is a match man-made fracture 3D form sketch map;
Figure 23 is a down-hole microseism surveillance map;
Figure 24 asks the product curve map for pressing back 14 millimeters oil nozzle discharge opeings;
Figure 25 is four sections comprehensive logging curve maps of red shallow 001-6-X4 well palpus of embodiment 2;
Figure 26 is mini-frac construction curve and the drawdown analysis result of embodiment 2;
Figure 27 is nearly well pattern network crack staged construction curve and the drawdown analysis result of embodiment 2;
Figure 28 is main pressure break staged construction curve and the drawdown analysis result of embodiment 2;
Figure 29 is that the plane of all case points of three sections pressure breaks (mini-frac, seam net pressure break, main pressure break) shows;
Figure 30 is the Three-dimensional Display of all case points of three sections pressure breaks (mini-frac, seam net pressure break, main pressure break).
The specific embodiment
Be described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Embodiment 1:
PuG101 well fractured interval lithology is siltstone, packsand; Reservoir space is mainly pore type, grows intergranular pore, corrosion hole, and the rock core intrinsic fracture is grown; The major principal stress orientation is NE45 °, and the FMI imaging logging shows that nearly pit shaft intrinsic fracture orientation and major principal stress orientation angles are 40 °.Fractured well section 3700.9-3737.2m, thickness 25.2m/3 layer, well log interpretation degree of porosity 2-3%, interval transit time is less than 60us/ft, and permeability is interpreted as gas-bearing bed and difference gas-bearing formation less than 0.1 * 10-3 μ m2.Perforated interval is respectively 3700.9-3707.0m, 3711.1-3717.0m, 3724.0-3737.2m.The perforation hole is close to be 8 holes/m, 60 ° at phase angle, spiral cloth hole.
It is 109MPa that core experiment records fractured interval maximum horizontal principal stress value, and minimum level main stress bar value is 88MPa, horizontal stress diversity factor 0.24.Rock young's modulus of elasticity 34000-48000MPa, poisson's ratio 0.16-0.19, fracture gradient average out to 0.020-0.023MPa/m.The formation rock densification is hard.Three substratums are included near in the 50m thickness one cover sand body, and interval of interest stress and lithology are blocked stronger, fracture height scurry split limited.Selecting fracturing working fluid for use is the APV fracturing fluid.
Carry out the base fluid mini-frac before the pressure, explanation results sees the following form.
Table mini-frac explanation results
According to the mini-frac explanation results, nearly well pattern network crack pressure break and main pressure break are all selected density high-strength ceramsite in the 30-50 order, and the nearly well stage adds the sand scale and confirms as 8m
3, main pressure break adds the sand scale and confirms as 60m
3
Embodiment 2:
Shallow 001-6-X4 well fractured interval 1803.8-1819.4m, the fine lithology sandstone.All the other steps are identical with embodiment 1.
The comprehensive log interpretation outcome table
Figure 25 is four sections (well section 1790～1830m) comprehensive logging curve maps of red shallow 001-6-X4 well palpus of embodiment 2;
Figure 26 is mini-frac construction curve and the drawdown analysis result of embodiment 2;
Figure 27 is nearly well pattern network crack staged construction curve and the drawdown analysis result of embodiment 2;
Figure 28 is main pressure break staged construction curve and the drawdown analysis result of embodiment 2;
Crack Monitoring result is shown in figure 29 to be gone out, and the plane that Figure 29 is indicated as all case points of three sections pressure breaks (mini-frac, seam net pressure break, main pressure break) shows;
Figure 30 is that the three-dimensional of all case points of three sections pressure breaks (mini-frac, seam net pressure break, main pressure break) shows not;
The main pressure break time period is 17:14～18:04, continues 50 minutes.Incident is many during the main pressure break, and stops after the pressure break some incidents being arranged also.The demonstration that is superimposed a little with main pressure break and mini-frac, seam net pressure break.
Figure 29 is the perspective view on three planes, and Figure 30 is three figure in the Three-dimensional Display.Case point during the main pressure break is expanded to the periphery, mainly along north by west, also has a branch in direction to the west.The about NW10 degree in major fracture orientation, the eastern wing south to seam be about 170 meters, the western wing north to seam be about 220 meters, the western wing westwards direction seam is about 150 meters.The case point depth profile is 1578～1623, and the great majority point concentrates in 30 meters altitude ranges, and the crack that pressure break forms is not conventional single crack.
Red shallow 001-6-X4 Crack Monitoring explanation results
Press back 5mm oil nozzle discharge opeing to ask product, daily gas 4.8 * 10
4m
3Obvious effect of increasing production.
As stated, embodiments of the invention have been carried out explanation at length, but as long as not breaking away from inventive point of the present invention and effect in fact can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation also all is included within protection scope of the present invention.
Claims (9)
1. a fracture-type reservoir nonplanar network crack pressing crack construction control method is characterized in that, may further comprise the steps:
A) press preceding the evaluation, comprising: intrinsic fracture development degree and orientation are obtained according to FMI imaging logging and conventional logging data in (1); (2) confirm the man-made fracture orientation; (3) angular relationship of judgement man-made fracture and intrinsic fracture; (4) judge the abundant degree that nonplanar network crack pressure break forms;
B) the numerical inversion method of utilizing many wells constrained optimization and finite element to combine is set up the INVERSION OF STRESS FIELD Constraint Anchored Optimization, obtains fracture reservoir zone three-dimensional ground stress state and the simulation of rock mechanics parameter values;
C) select corresponding construction parameter, press off the stratum and force intrinsic fracture or hole opens as far as possible;
D) intrinsic fracture of explaining according to mini-frac is opened equivalent bar number and aperture, and the proppant particle diameter and the consumption of selection and intrinsic fracture or hole coupling carry proppant with fracturing fluid and get into intrinsic fracture or hole;
E) closing up of cracks is treated in termination of pumping.
2. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method; It is characterized in that; According to steps A) in step (1) development degree that draws intrinsic fracture when being the obsolete low permeability reservoir in crack, when two during, also need utilize big discharge capacity construction to horizontal principal stress difference≤5MPa; Improve net pressure value in the crack, make the net pressure value greater than two to the horizontal principal stress difference.
3. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method; It is characterized in that; According to steps A) in step (1) development degree that draws intrinsic fracture when being the low permeability reservoir of the little growth in crack; Also need in fracturing fluid, add the reservoir protection additive, use the large discharge pump that surpasses reservoir pore space crack filtration capacity to annotate, shear crack and more microcrack are linked up.
4. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method; It is characterized in that; The definite of the man-made fracture of the step said steps A) (2) obtains through borehole wall avalanche analytical method, and borehole wall avalanche direction is the minimum level principal direction of stress.
5. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method; It is characterized in that; Confirming of the man-made fracture of the step said steps A) (2) through the acquisition of drilling induced seam analytical method; Have parallel on the FMI image and be 180 ° of symmetrical high angle fracture, direction is the maximum horizontal principal stress direction.
6. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method; It is characterized in that; Confirming of the man-made fracture of the step said steps A) (2) through the acquisition of dipole shear wave logging method; Dipole shear wave logging is measured the shear wave anisotropy on stratum, and the fast transverse wave azimuth is corresponding to horizontal biggest principal stress direction or tomography, fracture strike.
7. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method is characterized in that described step D) in fracturing fluid require the initial stage can not form filter cake, rely on its elasticity to take sand.
8. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method is characterized in that described step D) in the described fracturing fluid of fracturing fluid adopt APV fracturing fluid system.
9. a kind of fracture-type reservoir nonplanar network according to claim 1 crack pressing crack construction control method is characterized in that described step D) in the described proppant of fracturing fluid be haydite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100826173A CN102606126A (en) | 2012-03-27 | 2012-03-27 | Non-planar network fracturing control method for fractured reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100826173A CN102606126A (en) | 2012-03-27 | 2012-03-27 | Non-planar network fracturing control method for fractured reservoir |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102606126A true CN102606126A (en) | 2012-07-25 |
Family
ID=46523847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100826173A Pending CN102606126A (en) | 2012-03-27 | 2012-03-27 | Non-planar network fracturing control method for fractured reservoir |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102606126A (en) |
Cited By (59)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865060A (en) * | 2012-09-25 | 2013-01-09 | 西南石油大学 | Determining method of amount of shale oil deposit hydrofracture propping agent |
| CN102877828A (en) * | 2012-09-09 | 2013-01-16 | 山西山地物探技术有限公司 | CT (Computed Tomography) imaging method of three-dimensional multi-well combined well land |
| CN103087699A (en) * | 2012-12-27 | 2013-05-08 | 中国石油化工股份有限公司 | Sand-carrying profile control agent composition of fracture-cave type oil deposit and profile control method of profile control agent |
| CN103206207A (en) * | 2013-03-01 | 2013-07-17 | 陕西延长石油(集团)有限责任公司研究院 | Favorable oil reservoir region identification method based on hydrocarbon generation period ancient structure |
| CN103278614A (en) * | 2013-04-28 | 2013-09-04 | 北京大学 | Method and device for correcting dynamic and static rock mechanical parameters |
| CN103306659A (en) * | 2013-07-04 | 2013-09-18 | 中国石油大学(华东) | Fracturing technology for implementing ultrahigh flow conductivity |
| CN103953323A (en) * | 2014-05-08 | 2014-07-30 | 西南石油大学 | Hydraulic fracturing technology for horizontal well with fractures |
| CN104234699A (en) * | 2013-06-18 | 2014-12-24 | 中国石油天然气股份有限公司 | Analysis method for expressing horizontal shaft wall stress change |
| CN104500017A (en) * | 2014-12-12 | 2015-04-08 | 中国石油天然气集团公司 | Method for optimizing staged fracturing position of horizontal well |
| CN104533375A (en) * | 2014-12-26 | 2015-04-22 | 中国石油天然气股份有限公司 | Fracturing transformation method for natural fractured reservoir |
| CN104564048A (en) * | 2015-01-20 | 2015-04-29 | 西南石油大学 | Large-size and multi-crack simulation device and method for propping agent transportation |
| CN104685153A (en) * | 2012-08-24 | 2015-06-03 | 普拉德研究及开发股份有限公司 | System and method for performing stimulation operations |
| CN104712299A (en) * | 2013-12-11 | 2015-06-17 | 中国石油天然气股份有限公司 | Design method suitable for water control and gas increase fracturing of gas well |
| CN104863560A (en) * | 2015-03-09 | 2015-08-26 | 东方宝麟科技发展(北京)有限公司 | Wide-net fracturing method for shale gas exploitation |
| CN104989393A (en) * | 2015-07-14 | 2015-10-21 | 北京博达瑞恒科技有限公司 | Micro fracturing test method |
| CN105003240A (en) * | 2015-07-15 | 2015-10-28 | 西南石油大学 | Hydrofracture design parameter optimization method based on fine classification of reservoir |
| CN105003246A (en) * | 2014-04-17 | 2015-10-28 | 中国石油化工股份有限公司 | Method for determining horizontal well fracture number |
| CN105019875A (en) * | 2014-04-15 | 2015-11-04 | 中国海洋石油总公司 | Artificial interlayer separant evaluate method |
| CN105074125A (en) * | 2012-12-27 | 2015-11-18 | 普拉德研究及开发股份有限公司 | Method of calibrating fracture geometry to microseismic events |
| CN105443102A (en) * | 2014-07-14 | 2016-03-30 | 中国石油化工股份有限公司 | Horizontal well layer blast crack body modeling method |
| CN105550441A (en) * | 2015-12-12 | 2016-05-04 | 山东科技大学 | Engineering rock mass fracture degradation numerical simulation method based on continuous medium |
| CN105909226A (en) * | 2016-04-22 | 2016-08-31 | 中国石油天然气股份有限公司 | Method for improving complexity of fracture network through cyclic stress fracturing |
| CN104278980B (en) * | 2013-07-09 | 2016-12-28 | 中国石油天然气股份有限公司 | Method for optimizing compact oil horizontal well seam network parameters by adopting improved volume |
| CN106353809A (en) * | 2016-08-11 | 2017-01-25 | 中国石油大学(华东) | Inversion representation method of fracturing fracture network |
| CN106382111A (en) * | 2015-07-28 | 2017-02-08 | 中国石油化工股份有限公司 | Method increasing shale gas fracturing crack complexity |
| CN107194101A (en) * | 2017-06-05 | 2017-09-22 | 中国石油天然气股份有限公司 | Horizontal well fracturing crack layer-crossing layer number diagnosis method |
| CN107476790A (en) * | 2016-06-07 | 2017-12-15 | 中国石油化工股份有限公司 | A kind of fracturing process for the unlimited discharge capacity of pressure limiting for improving shale gas crack transformation volume |
| CN107578471A (en) * | 2017-09-18 | 2018-01-12 | 西南石油大学 | A kind of self-supporting crack initial configuration construction method |
| CN107742176A (en) * | 2017-08-17 | 2018-02-27 | 中国石油天然气股份有限公司 | Method for determining natural fracture development compact oil reservoir development mode |
| CN107905775A (en) * | 2017-11-16 | 2018-04-13 | 中国石油集团川庆钻探工程有限公司 | Fracturing fracture parameter real-time interpretation method based on adjacent well pressure monitoring |
| CN107916917A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Improve the long method of hydraulic fracturing double-vane crack seam |
| CN108266182A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | Method and device for selecting fracture distribution mode of horizontal well staged fracturing |
| CN108386176A (en) * | 2018-01-30 | 2018-08-10 | 中国石油天然气股份有限公司 | Physical model test method for natural crack and artificial crack extension rule |
| CN108625838A (en) * | 2017-03-16 | 2018-10-09 | 中国石油化工股份有限公司 | Formation breakdown method |
| CN108952668A (en) * | 2017-05-17 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of fracturing process of normal pressure shale gas reservoir reservoir |
| CN109033698A (en) * | 2018-08-21 | 2018-12-18 | 西南石油大学 | A method of it is calculated for laminar formation horizontal well fracture pressure |
| CN109339760A (en) * | 2018-11-05 | 2019-02-15 | 中国石油化工股份有限公司 | A kind of horizontal well cluster fracturing fracture more than one section item number diagnostic method |
| CN109630098A (en) * | 2019-02-15 | 2019-04-16 | 中国地质科学院地质力学研究所 | A method of poor stress is measured using core |
| CN109883889A (en) * | 2019-01-24 | 2019-06-14 | 西南石油大学 | Simulate CO2In dense matrix-crack diffusion experimental provision and leading edge prediction technique |
| CN109887614A (en) * | 2019-01-22 | 2019-06-14 | 中国石油天然气股份有限公司 | Hydraulic fracture analysis method and device |
| US10352145B2 (en) | 2011-03-11 | 2019-07-16 | Schlumberger Technology Corporation | Method of calibrating fracture geometry to microseismic events |
| CN110147561A (en) * | 2018-11-05 | 2019-08-20 | 中国石油大学(华东) | A kind of oil and gas reservoir volume fracturing of densification containing intrinsic fracture seam net prediction technique |
| US10422208B2 (en) | 2011-11-04 | 2019-09-24 | Schlumberger Technology Corporation | Stacked height growth fracture modeling |
| CN110374574A (en) * | 2018-04-13 | 2019-10-25 | 中国石油化工股份有限公司 | The method of straight well directional well massive hydraulic fracture control critical eigenvalue complexity |
| CN110501266A (en) * | 2019-09-27 | 2019-11-26 | 西南石油大学 | A method of evaluation proppant sand heap linear deformation |
| US10544667B2 (en) | 2011-11-04 | 2020-01-28 | Schlumberger Technology Corporation | Modeling of interaction of hydraulic fractures in complex fracture networks |
| CN111045082A (en) * | 2020-01-06 | 2020-04-21 | 中国石油化工股份有限公司 | Method for constructing hydraulic fracturing fracture space seam network by using microseism event points |
| CN111894545A (en) * | 2019-05-06 | 2020-11-06 | 中国石油化工股份有限公司 | Method for determining proppant pumping scheme |
| CN112539054A (en) * | 2020-11-25 | 2021-03-23 | 中国石油大学(华东) | Production optimization method for ground pipe network and underground oil reservoir complex system |
| CN112649282A (en) * | 2020-12-30 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Method for inducing fault/crack activation under simulated stress disturbance condition |
| CN112730198A (en) * | 2021-01-15 | 2021-04-30 | 中国地质大学（武汉） | Shale natural fracture permeability calculation method |
| CN113011063A (en) * | 2021-03-05 | 2021-06-22 | 中国石油大学(华东) | Ancient tectonic stress field inversion method based on tectonic evolution profile |
| CN113107363A (en) * | 2021-05-31 | 2021-07-13 | 中国矿业大学 | Horizontal well construction method for promoting fracture dislocation and improving self-supporting capability |
| CN113494283A (en) * | 2021-09-08 | 2021-10-12 | 中国科学院地质与地球物理研究所 | Ultra-shallow layer shale gas geological engineering integrated development method |
| CN113945966A (en) * | 2021-05-25 | 2022-01-18 | 中国矿业大学(北京) | Method and device for constructing artificial fracturing fracture network |
| CN113969773A (en) * | 2021-10-21 | 2022-01-25 | 中国石油化工股份有限公司 | Coarse natural fracture fracturing fluid loss test method |
| CN114482962A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Volume fracturing method for reservoir well section high-density mud drilling and application thereof |
| CN114508338A (en) * | 2020-11-17 | 2022-05-17 | 中国石油化工股份有限公司 | Acid liquor system selection method for hole finding through circular seam |
| CN115081352A (en) * | 2022-06-09 | 2022-09-20 | 中海石油(中国)有限公司 | Design optimization method and device for end desanding process of deepwater high-temperature high-pressure loose sandstone |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353958A (en) * | 2007-07-25 | 2009-01-28 | 中国石油天然气股份有限公司 | Oil-gas well exploitation temperature control variable mucic acid fracturing method |
-
2012
- 2012-03-27 CN CN2012100826173A patent/CN102606126A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353958A (en) * | 2007-07-25 | 2009-01-28 | 中国石油天然气股份有限公司 | Oil-gas well exploitation temperature control variable mucic acid fracturing method |
Non-Patent Citations (4)
| Title |
|---|
| 何育荣等: "多裂缝压裂工艺研究及现场实践", 《石油钻采工艺》, vol. 33, no. 4, 15 July 2011 (2011-07-15) * |
| 翁定为等: "缝网压裂技术及其现场应用", 《石油学报》, vol. 32, no. 2, 15 March 2011 (2011-03-15) * |
| 陈守雨等: "裂缝性储层缝网压裂技术研究及应用", 《石油钻采工艺》, vol. 32, no. 6, 15 November 2010 (2010-11-15) * |
| 雷群等: "用于提高低-特低渗透油气藏改造效果的缝网压裂技术", 《石油学报》, vol. 30, no. 2, 15 March 2009 (2009-03-15) * |
Cited By (93)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10352145B2 (en) | 2011-03-11 | 2019-07-16 | Schlumberger Technology Corporation | Method of calibrating fracture geometry to microseismic events |
| US10422208B2 (en) | 2011-11-04 | 2019-09-24 | Schlumberger Technology Corporation | Stacked height growth fracture modeling |
| US10544667B2 (en) | 2011-11-04 | 2020-01-28 | Schlumberger Technology Corporation | Modeling of interaction of hydraulic fractures in complex fracture networks |
| US9618652B2 (en) | 2011-11-04 | 2017-04-11 | Schlumberger Technology Corporation | Method of calibrating fracture geometry to microseismic events |
| CN104685153A (en) * | 2012-08-24 | 2015-06-03 | 普拉德研究及开发股份有限公司 | System and method for performing stimulation operations |
| CN102877828A (en) * | 2012-09-09 | 2013-01-16 | 山西山地物探技术有限公司 | CT (Computed Tomography) imaging method of three-dimensional multi-well combined well land |
| CN102865060B (en) * | 2012-09-25 | 2015-03-18 | 西南石油大学 | Determining method of amount of shale oil deposit hydrofracture propping agent |
| CN102865060A (en) * | 2012-09-25 | 2013-01-09 | 西南石油大学 | Determining method of amount of shale oil deposit hydrofracture propping agent |
| CN103087699B (en) * | 2012-12-27 | 2015-05-20 | 中国石油化工股份有限公司 | Sand-carrying profile control agent composition of fracture-cave type oil deposit and profile control method of profile control agent |
| CN105074125A (en) * | 2012-12-27 | 2015-11-18 | 普拉德研究及开发股份有限公司 | Method of calibrating fracture geometry to microseismic events |
| CN105074125B (en) * | 2012-12-27 | 2018-04-20 | 普拉德研究及开发股份有限公司 | The method calibrated for microseismic event fracture geometry |
| CN103087699A (en) * | 2012-12-27 | 2013-05-08 | 中国石油化工股份有限公司 | Sand-carrying profile control agent composition of fracture-cave type oil deposit and profile control method of profile control agent |
| CN103206207A (en) * | 2013-03-01 | 2013-07-17 | 陕西延长石油(集团)有限责任公司研究院 | Favorable oil reservoir region identification method based on hydrocarbon generation period ancient structure |
| CN103206207B (en) * | 2013-03-01 | 2015-06-17 | 陕西延长石油(集团)有限责任公司研究院 | Favorable oil reservoir region identification method based on hydrocarbon generation period ancient structure |
| CN103278614B (en) * | 2013-04-28 | 2015-07-22 | 北京大学 | Method and device for correcting dynamic and static rock mechanical parameters |
| CN103278614A (en) * | 2013-04-28 | 2013-09-04 | 北京大学 | Method and device for correcting dynamic and static rock mechanical parameters |
| CN104234699A (en) * | 2013-06-18 | 2014-12-24 | 中国石油天然气股份有限公司 | Analysis method for expressing horizontal shaft wall stress change |
| CN103306659B (en) * | 2013-07-04 | 2016-05-18 | 中国石油大学(华东) | A kind of fracturing technology of realizing superelevation flow conductivity |
| CN103306659A (en) * | 2013-07-04 | 2013-09-18 | 中国石油大学(华东) | Fracturing technology for implementing ultrahigh flow conductivity |
| CN104278980B (en) * | 2013-07-09 | 2016-12-28 | 中国石油天然气股份有限公司 | Method for optimizing compact oil horizontal well seam network parameters by adopting improved volume |
| CN104712299A (en) * | 2013-12-11 | 2015-06-17 | 中国石油天然气股份有限公司 | Design method suitable for water control and gas increase fracturing of gas well |
| CN104712299B (en) * | 2013-12-11 | 2017-09-01 | 中国石油天然气股份有限公司 | Design method suitable for water control and gas increase fracturing of gas well |
| CN105019875A (en) * | 2014-04-15 | 2015-11-04 | 中国海洋石油总公司 | Artificial interlayer separant evaluate method |
| CN105019875B (en) * | 2014-04-15 | 2018-05-01 | 中海石油(中国)有限公司上海分公司 | Human-cutting high slope interleaving agent evaluation method |
| CN105003246A (en) * | 2014-04-17 | 2015-10-28 | 中国石油化工股份有限公司 | Method for determining horizontal well fracture number |
| CN103953323B (en) * | 2014-05-08 | 2016-03-16 | 西南石油大学 | A kind of horizontal well produces the hydraulic fracturing process of seam net |
| CN103953323A (en) * | 2014-05-08 | 2014-07-30 | 西南石油大学 | Hydraulic fracturing technology for horizontal well with fractures |
| CN105443102A (en) * | 2014-07-14 | 2016-03-30 | 中国石油化工股份有限公司 | Horizontal well layer blast crack body modeling method |
| CN105443102B (en) * | 2014-07-14 | 2018-07-20 | 中国石油化工股份有限公司 | A kind of horizontal well exploding in fracture crack volume modeling method |
| CN104500017A (en) * | 2014-12-12 | 2015-04-08 | 中国石油天然气集团公司 | Method for optimizing staged fracturing position of horizontal well |
| CN104533375A (en) * | 2014-12-26 | 2015-04-22 | 中国石油天然气股份有限公司 | Fracturing transformation method for natural fractured reservoir |
| CN104564048A (en) * | 2015-01-20 | 2015-04-29 | 西南石油大学 | Large-size and multi-crack simulation device and method for propping agent transportation |
| CN104863560A (en) * | 2015-03-09 | 2015-08-26 | 东方宝麟科技发展(北京)有限公司 | Wide-net fracturing method for shale gas exploitation |
| CN104989393A (en) * | 2015-07-14 | 2015-10-21 | 北京博达瑞恒科技有限公司 | Micro fracturing test method |
| CN105003240A (en) * | 2015-07-15 | 2015-10-28 | 西南石油大学 | Hydrofracture design parameter optimization method based on fine classification of reservoir |
| CN106382111B (en) * | 2015-07-28 | 2020-06-09 | 中国石油化工股份有限公司 | Method for increasing complexity of shale gas fracturing fracture |
| CN106382111A (en) * | 2015-07-28 | 2017-02-08 | 中国石油化工股份有限公司 | Method increasing shale gas fracturing crack complexity |
| CN105550441A (en) * | 2015-12-12 | 2016-05-04 | 山东科技大学 | Engineering rock mass fracture degradation numerical simulation method based on continuous medium |
| CN105550441B (en) * | 2015-12-12 | 2018-05-18 | 山东科技大学 | A kind of engineering rock mass rupture deterioration method for numerical simulation based on continuous media |
| CN105909226A (en) * | 2016-04-22 | 2016-08-31 | 中国石油天然气股份有限公司 | Method for improving complexity of fracture network through cyclic stress fracturing |
| CN105909226B (en) * | 2016-04-22 | 2018-07-10 | 中国石油天然气股份有限公司 | Method for improving complexity of fracture network through cyclic stress fracturing |
| CN107476790B (en) * | 2016-06-07 | 2019-12-13 | 中国石油化工股份有限公司 | Pressure-limiting unlimited-displacement fracturing method for improving shale gas fracture reconstruction volume |
| CN107476790A (en) * | 2016-06-07 | 2017-12-15 | 中国石油化工股份有限公司 | A kind of fracturing process for the unlimited discharge capacity of pressure limiting for improving shale gas crack transformation volume |
| CN106353809A (en) * | 2016-08-11 | 2017-01-25 | 中国石油大学(华东) | Inversion representation method of fracturing fracture network |
| CN107916917A (en) * | 2016-10-10 | 2018-04-17 | 中国石油化工股份有限公司 | Improve the long method of hydraulic fracturing double-vane crack seam |
| CN108266182A (en) * | 2016-12-30 | 2018-07-10 | 中国石油天然气股份有限公司 | Method and device for selecting fracture distribution mode of horizontal well staged fracturing |
| CN108625838A (en) * | 2017-03-16 | 2018-10-09 | 中国石油化工股份有限公司 | Formation breakdown method |
| CN108625838B (en) * | 2017-03-16 | 2020-07-03 | 中国石油化工股份有限公司 | Formation fracturing method |
| CN108952668A (en) * | 2017-05-17 | 2018-12-07 | 中国石油化工股份有限公司 | A kind of fracturing process of normal pressure shale gas reservoir reservoir |
| CN108952668B (en) * | 2017-05-17 | 2020-11-20 | 中国石油化工股份有限公司 | Fracturing method of normal-pressure shale gas reservoir |
| CN107194101B (en) * | 2017-06-05 | 2021-03-23 | 中国石油天然气股份有限公司 | Horizontal well fracturing crack layer-crossing layer number diagnosis method |
| CN107194101A (en) * | 2017-06-05 | 2017-09-22 | 中国石油天然气股份有限公司 | Horizontal well fracturing crack layer-crossing layer number diagnosis method |
| CN107742176A (en) * | 2017-08-17 | 2018-02-27 | 中国石油天然气股份有限公司 | Method for determining natural fracture development compact oil reservoir development mode |
| CN107742176B (en) * | 2017-08-17 | 2020-09-04 | 中国石油天然气股份有限公司 | Method for determining natural fracture development compact oil reservoir development mode |
| CN107578471B (en) * | 2017-09-18 | 2020-09-01 | 西南石油大学 | Construction method for initial form of self-supporting fracture |
| CN107578471A (en) * | 2017-09-18 | 2018-01-12 | 西南石油大学 | A kind of self-supporting crack initial configuration construction method |
| CN107905775A (en) * | 2017-11-16 | 2018-04-13 | 中国石油集团川庆钻探工程有限公司 | Fracturing fracture parameter real-time interpretation method based on adjacent well pressure monitoring |
| CN108386176B (en) * | 2018-01-30 | 2020-07-14 | 中国石油天然气股份有限公司 | Physical model test method for natural crack and artificial crack extension rule |
| CN108386176A (en) * | 2018-01-30 | 2018-08-10 | 中国石油天然气股份有限公司 | Physical model test method for natural crack and artificial crack extension rule |
| CN110374574A (en) * | 2018-04-13 | 2019-10-25 | 中国石油化工股份有限公司 | The method of straight well directional well massive hydraulic fracture control critical eigenvalue complexity |
| CN109033698A (en) * | 2018-08-21 | 2018-12-18 | 西南石油大学 | A method of it is calculated for laminar formation horizontal well fracture pressure |
| CN109033698B (en) * | 2018-08-21 | 2022-05-20 | 西南石油大学 | Method for calculating fracture pressure of horizontal well in layered stratum |
| CN109339760B (en) * | 2018-11-05 | 2021-08-31 | 中国石油化工股份有限公司 | Horizontal well section multi-cluster fracturing fracture number diagnosis method |
| CN110147561B (en) * | 2018-11-05 | 2023-05-09 | 中国石油大学(华东) | Method for predicting volume fracture network of tight oil and gas reservoir containing natural fracture |
| CN110147561A (en) * | 2018-11-05 | 2019-08-20 | 中国石油大学(华东) | A kind of oil and gas reservoir volume fracturing of densification containing intrinsic fracture seam net prediction technique |
| CN109339760A (en) * | 2018-11-05 | 2019-02-15 | 中国石油化工股份有限公司 | A kind of horizontal well cluster fracturing fracture more than one section item number diagnostic method |
| CN109887614A (en) * | 2019-01-22 | 2019-06-14 | 中国石油天然气股份有限公司 | Hydraulic fracture analysis method and device |
| CN109883889A (en) * | 2019-01-24 | 2019-06-14 | 西南石油大学 | Simulate CO2In dense matrix-crack diffusion experimental provision and leading edge prediction technique |
| CN109883889B (en) * | 2019-01-24 | 2021-09-28 | 西南石油大学 | Simulation of CO2Experimental device for compact matrix-crack diffusion and leading edge prediction method |
| CN109630098A (en) * | 2019-02-15 | 2019-04-16 | 中国地质科学院地质力学研究所 | A method of poor stress is measured using core |
| CN111894545A (en) * | 2019-05-06 | 2020-11-06 | 中国石油化工股份有限公司 | Method for determining proppant pumping scheme |
| CN111894545B (en) * | 2019-05-06 | 2022-07-22 | 中国石油化工股份有限公司 | Method for determining proppant pumping scheme |
| CN110501266A (en) * | 2019-09-27 | 2019-11-26 | 西南石油大学 | A method of evaluation proppant sand heap linear deformation |
| US10823646B1 (en) | 2019-09-27 | 2020-11-03 | Southwest Petroleum University | Method for evaluating the longitudinal deformation of proppant pack |
| CN110501266B (en) * | 2019-09-27 | 2020-02-28 | 西南石油大学 | Method for evaluating longitudinal deformation of proppant sand pile |
| CN111045082A (en) * | 2020-01-06 | 2020-04-21 | 中国石油化工股份有限公司 | Method for constructing hydraulic fracturing fracture space seam network by using microseism event points |
| CN114482962A (en) * | 2020-10-27 | 2022-05-13 | 中国石油化工股份有限公司 | Volume fracturing method for reservoir well section high-density mud drilling and application thereof |
| CN114508338A (en) * | 2020-11-17 | 2022-05-17 | 中国石油化工股份有限公司 | Acid liquor system selection method for hole finding through circular seam |
| CN112539054A (en) * | 2020-11-25 | 2021-03-23 | 中国石油大学(华东) | Production optimization method for ground pipe network and underground oil reservoir complex system |
| CN112539054B (en) * | 2020-11-25 | 2024-05-14 | 中国石油大学(华东) | Production optimization method for complex system of ground pipe network and underground oil reservoir |
| CN112649282A (en) * | 2020-12-30 | 2021-04-13 | 中国科学院武汉岩土力学研究所 | Method for inducing fault/crack activation under simulated stress disturbance condition |
| CN112730198A (en) * | 2021-01-15 | 2021-04-30 | 中国地质大学（武汉） | Shale natural fracture permeability calculation method |
| CN112730198B (en) * | 2021-01-15 | 2022-04-01 | 中国地质大学（武汉） | Shale natural fracture permeability calculation method |
| CN113011063B (en) * | 2021-03-05 | 2022-04-29 | 中国石油大学(华东) | Ancient tectonic stress field inversion method based on tectonic evolution profile |
| CN113011063A (en) * | 2021-03-05 | 2021-06-22 | 中国石油大学(华东) | Ancient tectonic stress field inversion method based on tectonic evolution profile |
| CN113945966B (en) * | 2021-05-25 | 2022-05-03 | 中国矿业大学(北京) | Method and device for constructing artificial fracturing fracture network |
| CN113945966A (en) * | 2021-05-25 | 2022-01-18 | 中国矿业大学(北京) | Method and device for constructing artificial fracturing fracture network |
| CN113107363A (en) * | 2021-05-31 | 2021-07-13 | 中国矿业大学 | Horizontal well construction method for promoting fracture dislocation and improving self-supporting capability |
| CN113107363B (en) * | 2021-05-31 | 2023-09-01 | 中国矿业大学 | Horizontal well construction method for promoting fracture dislocation and improving self-supporting capacity |
| CN113494283A (en) * | 2021-09-08 | 2021-10-12 | 中国科学院地质与地球物理研究所 | Ultra-shallow layer shale gas geological engineering integrated development method |
| CN113969773A (en) * | 2021-10-21 | 2022-01-25 | 中国石油化工股份有限公司 | Coarse natural fracture fracturing fluid loss test method |
| CN115081352A (en) * | 2022-06-09 | 2022-09-20 | 中海石油(中国)有限公司 | Design optimization method and device for end desanding process of deepwater high-temperature high-pressure loose sandstone |
| CN115081352B (en) * | 2022-06-09 | 2024-05-17 | 中海石油(中国)有限公司 | Design optimization method and device for deepwater high-temperature high-pressure loose sandstone end portion sand removal process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102606126A (en) | Non-planar network fracturing control method for fractured reservoir | |
| US7404441B2 (en) | Hydraulic feature initiation and propagation control in unconsolidated and weakly cemented sediments | |
| Warpinski et al. | Influence of geologic discontinuities on hydraulic fracture propagation (includes associated papers 17011 and 17074) | |
| US7866395B2 (en) | Hydraulic fracture initiation and propagation control in unconsolidated and weakly cemented sediments | |
| US7748458B2 (en) | Initiation and propagation control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments | |
| US6991037B2 (en) | Multiple azimuth control of vertical hydraulic fractures in unconsolidated and weakly cemented sediments | |
| US10415359B2 (en) | Hydraulic fracturing in highly heterogeneous formations by fluid selection based on fracture surface roughness | |
| CN109751032B (en) | Multi-particle-size proppant mixed fracturing method | |
| US20070199695A1 (en) | Hydraulic Fracture Initiation and Propagation Control in Unconsolidated and Weakly Cemented Sediments | |
| CN104533375A (en) | Fracturing transformation method for natural fractured reservoir | |
| US4889186A (en) | Overlapping horizontal fracture formation and flooding process | |
| CN108009670A (en) | A kind of optimum design method for improving supercritical carbon dioxide dry method fracturing effect | |
| CN105275446A (en) | A volume fracturing modification method | |
| CN109931045A (en) | A kind of self-supporting acid fracturing method of double slit system | |
| CN109958424A (en) | A method of realizing that hydraulic fracture end effectively blocks | |
| Lin et al. | Experiment simulation of hydraulic fracture in colliery hard roof control | |
| CN108952654B (en) | Fracturing method for oil and gas well | |
| CN108612518B (en) | Method for determining drilling and hydraulic fracturing parameters of radial micro-well bore of coal-bed gas well | |
| CN110094196A (en) | A kind of carbonate rock open-hole horizontal well segmentation acid fracturing effect evaluation method | |
| Surjaatmadja | Multioriented fracturing in unconventional reservoirs offers improved production by better connectivity | |
| CN104712299B (en) | Design method suitable for water control and gas increase fracturing of gas well | |
| CN212927815U (en) | Dual medium oil reservoir horizontal well completion structure | |
| Tremblay | Cold production of heavy oil | |
| Liu et al. | Understanding hydraulic fracture growth in tight oil reservoirs by integrating microseismic mapping and fracture modeling | |
| Abass et al. | Hydraulic fracturing: Experimental modeling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120725 |