CN103498651A - Thickened oil steam huff-and-puff well pressure curve collecting and using method - Google Patents
Thickened oil steam huff-and-puff well pressure curve collecting and using method Download PDFInfo
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- CN103498651A CN103498651A CN201310408432.1A CN201310408432A CN103498651A CN 103498651 A CN103498651 A CN 103498651A CN 201310408432 A CN201310408432 A CN 201310408432A CN 103498651 A CN103498651 A CN 103498651A
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Abstract
The invention provides a thickened oil steam huff-and-puff well pressure curve collecting and using method which comprises the steps that A. temperature and pressure data at a soaking pressure recovery stage are collected after a thickened oil steam huff-and-puff well is subjected to steam injection, the collection position of the temperature and pressure data is a well opening; B. a pressure recovery curve of the thickened oil steam huff-and-puff well is made according to the collected the temperature and pressure data of the thickened oil steam huff-and-puff well, the following production trend of the thickened oil steam huff-and-puff well after the steam injection is recorded; C. multiple pressure recovery curves of the thickened oil steam huff-and-puff well after multi-time steam injection or pressure recovery curves of multiple thickened oil steam huff-and-puff wells in the same oil production zone are made, the corresponding following production trends are recorded; D. one or more pressure recovery curve templates of the thickened oil steam huff-and-puff well or the thickened oil steam huff-and-puff wells of the oil production zone are formed according to the step C, and the following production trends corresponding to the pressure recovery curve templates are determined.
Description
Technical field
The present invention relates to the oil recovery field, be specifically related to the collection of a kind of thickened oil steam-stimulated well pressure curve and application process, to judge fast steam soak later stage steam injection efficiency.
Background technology
The heavy crude reservoir development late stage of handling up, ubiquity poor efficiency well increases, the obvious variation of economic benefit, the contradiction such as after driving a well, steam injection usually do not go out, although a lot of documents and report application have in various degree been arranged at present falloff curve or pressure build-up curve, but these technology are all the pressure monitorings to gas well or stratum reset pressure etc., can not realize under HTHP and collection and storage that pressure is real-time, the quick judgement of producing well Production trend after all not mentioning the acquisition method of the pressure and temperature under the steam injection high-temperature and high-pressure conditions and utilizing this pressure curve to steam soak.After steam injection, only have while by the time driving a well, could find that steam injection efficiency is bad, at this moment just need again to seal oil well steam injection again, can't realize delaying the activity duration at situation about the not driving a well steam injection efficiency that judges, increase operating cost, affect operating efficiency.
Summary of the invention
The purpose of this invention is to provide the collection of a kind of thickened oil steam-stimulated well pressure curve and application process, be difficult in the judge problem of steam injection efficiency of situation about not driving a well to solve prior art.After the present invention can also solve steam injection, in situation about adopting remedial measures for needs, the problem that prior art must drive a well and just can complete.
For this reason, the present invention proposes a kind of method that temperature, pressure Real-time Collection, storage and the data of steam-stimulated well are processed under HTHP, utilize the pressure build-up curve analysis classification gathered to return and produce the pressure build-up curve masterplate, and the masterplate curve type is provided to lower step measure embodiment, the recycling masterplate is compared and is instructed the well production of handling up with the pressure build-up curve of new steam injection well.
The collection of thickened oil steam-stimulated well pressure curve and application process that the present invention proposes comprise:
Steps A: gather a thickened oil steam-stimulated well stewing well pressure after steam injection and recover the temperature and pressure data in stage, set every N minute and gather a secondary data, the collection position of temperature and pressure data is the well head place;
Step B: according to the pressure build-up curve of the described thickened oil steam-stimulated well of temperature and pressure data creating of the described thickened oil steam-stimulated well gathered, and record the subsequent production trend of a described thickened oil steam-stimulated well after this steam injection;
Step C: make a plurality of pressure build-up curves after the repeatedly steam injection of a described thickened oil steam-stimulated well or make the pressure build-up curve of a plurality of thickened oil steam-stimulated wells in same oil recovery block, and record corresponding subsequent production trend;
Step D: form one or more pressure build-up curve templates of the thickened oil steam-stimulated well of a described thickened oil steam-stimulated well or described oil recovery block according to step C, and determine the corresponding subsequent production trend of each pressure build-up curve template.
Further, the collection of described thickened oil steam-stimulated well pressure curve and application process also comprise step e: the target thickened oil steam-stimulated well is carried out to steam injection, gather described target thickened oil steam-stimulated well stewing well pressure after steam injection and recover the temperature and pressure data in stage, set every N minute and gather a secondary data, the collection position of temperature and pressure data is the well head place;
Make the pressure build-up curve of this target thickened oil steam-stimulated well, the pressure build-up curve of this target thickened oil steam-stimulated well and pressure build-up curve template are contrasted, the home type of judgement target thickened oil steam-stimulated well, according to the home type of target thickened oil steam-stimulated well, judge the subsequent production trend of this target thickened oil steam-stimulated well.
Further, take follow-up technical measures according to the Production trend of target thickened oil steam-stimulated well.
Further, described follow-up technical measures comprise: the normal exploitation that drives a well, direct after-teeming steam and take energization, viscosity reduction or displacement of reservoir oil measure does not drive a well.
Further, described steps A also comprises: before at thickened oil steam-stimulated well of described collection, after steam injection, stewing well pressure recovers the temperature and pressure data in stage, gather the temperature T of a described thickened oil steam-stimulated well in steam injection process, while only having T to reach more than 250 ℃, steam injection is qualified, could make described template with the thickened oil steam-stimulated well the gathered pressure data that stewing well pressure recovers the stage after steam injection.
Further, described step e also comprises: before at the described target thickened oil steam-stimulated well of collection, after steam injection, stewing well pressure recovers the temperature and pressure data in stage, gather the temperature T 1 of described target thickened oil steam-stimulated well in steam injection process, while only having T1 to reach more than 250 ℃, steam injection is qualified, could make of the described target thickened oil steam-stimulated well that the gathering pressure data that stewing well pressure recovers the stage after steam injection the pressure build-up curve of described target thickened oil steam-stimulated well.
The present invention has utilized heavy crude reservoir handle up in exploitation pressure data and the down-hole at well head place or the corresponding characteristics of pressure data that shaft bottom is located, gathered, analyzed by the pressure data to the well head place, draw the Production trend of producing well after steam soak, can provide foundation for the production of thickened oil steam-stimulated well after steam injection in the future.
In addition, prior art is monitored the oil reservoir reset pressure at normal temperatures, rather than under the HTHP of steam, can not be for judging the Production trend of producing well after steam soak, the present invention is the real-time collection of the temperature, pressure under HTHP, analyze, and form masterplate, can effectively judge the Production trend of producing well after steam soak.
And then, no matter the present invention is in template construct process or the manufacturing process at the pressure build-up curve of target thickened oil steam-stimulated well, after all not only gathering steam injection, stewing well pressure recovers the temperature and pressure data in stage, also to gather in steam injection process, before perhaps after steam injection, boiling in a covered pot over a slow fire the well pressure recovery stage, gather the temperature data of steam injection, to make template and to carry out actual contrast, the steam injecting temperature data condition qualified as steam injection before stewing well pressure after steam injection recovers the stage, and as evidence, whether feasiblely judge the making template and carry out actual contrast, like this, improved the accuracy of the present invention's application.
The accompanying drawing explanation
Fig. 1 is the structural representation according to the thickened oil steam-stimulated well pressure curve harvester of the embodiment of the present invention;
Fig. 2 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the first figure of ascending-type;
Fig. 3 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the second figure of ascending-type;
Fig. 4 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the first figure of steady down type;
Fig. 5 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the second figure of steady down type;
Fig. 6 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the first figure of fast-descending type;
Fig. 7 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the second figure of fast-descending type;
Fig. 8 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the first figure of notch cuttype;
Fig. 9 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the second figure of notch cuttype;
Figure 10 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the first low rear the first figure that rises type;
Figure 11 is the figure according to the template curve of the embodiment of the present invention, wherein, shows the first low rear the second figure that rises type.
The drawing reference numeral explanation:
1, the second end 2, oil pipe short circuit 3, union 4, end plate 5, pressure meter 6, thermometer 7, cooling tube 8, the high pressure resistant valve of the first end 12 of hoop 11, hoop, hoop
In Fig. 2 to Figure 11, abscissa is time (unit for minute), and ordinate is pressure (unit is MPa)
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing explanation the specific embodiment of the present invention.
Thickened oil steam-stimulated well pressure curve of the present invention collection and application process comprise:
Steps A: gathering the thickened oil steam-stimulated well collection position that stewing well pressure recovers the temperature and pressure data temperature and pressure data in stage after steam injection is the well head place;
For example, pressure meter is arranged on before steam injection on the steam injection well head of thickened oil steam-stimulated well to be tested, in order to gather pressure data, in addition, thermometer can also be arranged on the steam injection well head of the to be tested well of handling up, in order to the collecting temperature data, the temperature data gathered like this reflects actual temperature and the steam injection situation at scene or well head place more accurately with respect to the temperature at outlet of steam boiler place, can learn that whether actual steam injection situation is qualified; Setting every N minute (is for example 3 minutes, 5 minutes, 7 minutes or setting as required, preferred interval 5 minutes, like this, image data frequency comparatively dense, the curve of making is more meticulous) gather a secondary data, the time gathered comprises: in steam injection process and after steam injection in 3-7 days, and the temperature and pressure data at continuous acquisition well head place, whole gatherer process is about 8-12 days;
Step B: according to the pressure build-up curve of the described thickened oil steam-stimulated well of temperature and pressure data creating of the described thickened oil steam-stimulated well gathered, and record the subsequent production trend of a described thickened oil steam-stimulated well after this steam injection; Subsequent production trend for example comprises: oil-well strata energy abundance, oil well stream-injection drives a well, and rear output is normal, the deficit of oil-well strata energy, steam injection drives a well and rear there will be high moisture situation, oil-well strata energy that certain deficit is arranged more, steam injection can not there will be after driving a well or production declining situation, oil-well strata energy have certain deficit, steam injection drive a well often occur that feed flow is poor afterwards, the oil-well strata energy is in debt serious, can not drive a well, or occur in high water zone, the high situation such as moisture of the rear appearance of driving a well;
Step C: make a plurality of pressure build-up curves after the repeatedly steam injection of a described thickened oil steam-stimulated well or make the pressure build-up curve of a plurality of thickened oil steam-stimulated wells in same oil recovery block, and record corresponding subsequent production trend, record subsequent production trend or a plurality of thickened oil steam-stimulated well subsequent production trend each steam injection after of a described thickened oil steam-stimulated well after each steam injection;
Step D: form one or more pressure build-up curve templates of the thickened oil steam-stimulated well of a described thickened oil steam-stimulated well or described oil recovery block according to step C, and determine the corresponding subsequent production trend of each pressure build-up curve template.
Template curve is by a large amount of measured datas of prior thickened oil steam-stimulated well (can be a well, can be also the Duo Koujing of an oil recovery block), and produces the curve of dynamic regression matching gained in conjunction with the well of handling up.The template curve abscissa is the time, ordinate is pressure, and the pressure curve of the pressure curve of a bite well that will obtain according to step C or many mouthfuls of wells of an oil recovery block is analyzed, and arranges, can also be revised with the production curve, adopt data processing methods such as intending recurrence to produce masterplate.Make in template procedure, every survey a bite well forms a figure, and masterplate is the overlapping generation of figure that a upper thousand sheets is close, likely also will be revised with creation data, returns out universal law.
Further, the collection of described thickened oil steam-stimulated well pressure curve and application process also comprise step e: the target thickened oil steam-stimulated well is carried out to steam injection, gather described target thickened oil steam-stimulated well stewing well pressure after steam injection and recover the temperature and pressure data in stage, set every N minute and gather a secondary data, the collection position of temperature and pressure data is the well head place;
Make the pressure build-up curve of this target thickened oil steam-stimulated well, the pressure build-up curve of this target thickened oil steam-stimulated well and pressure build-up curve template are contrasted, the home type of judgement target thickened oil steam-stimulated well, the pressure build-up curve that judges the target thickened oil steam-stimulated well belongs to any pressure build-up curve template, according to the home type of target thickened oil steam-stimulated well, judge the subsequent production trend of this target thickened oil steam-stimulated well.
Step e is namely applied pressure data and the pressure build-up curve of the collection of target thickened oil steam-stimulated well, by the pressure build-up curve template of the same time period obtained in advance, contrasted, thereby can be in the situation that do not drive a well, just can prejudge the subsequent production trend of target thickened oil steam-stimulated well, for the subsequent production of this well provides theoretical direction.
Further, according to the Production trend of target thickened oil steam-stimulated well, take follow-up technical measures.Like this, can be in the time can normally producing, opening well and making production, if can not normally produce, can directly take the remedial measures such as after-teeming steam in the situation that do not drive a well, can not produce remedial measures such as taking again after-teeming steam after having avoided driving a well and technologic do over again and repeatedly of causing.
Further, described follow-up technical measures comprise: the normal exploitation that drives a well, direct after-teeming steam and take the measures such as energization, viscosity reduction or the displacement of reservoir oil does not drive a well.According to the Production trend of target thickened oil steam-stimulated well, can adopt suitable or corresponding follow-up technical measures, to accomplish making the continuous technical measures of target thickened oil steam-stimulated well pointed with a definite target in view.
Further, described steps A also comprises: before at thickened oil steam-stimulated well of described collection, after steam injection, stewing well pressure recovers the temperature and pressure data in stage, gather the temperature T of a described thickened oil steam-stimulated well in steam injection process, while only having T to reach more than 250 ℃, steam injection is qualified, could make described template with the thickened oil steam-stimulated well the gathered pressure data that stewing well pressure recovers the stage after steam injection.Like this, can guarantee the making of pressure build-up curve template, be in the situation that steam injection is qualified, thereby, guaranteed the quality of pressure build-up curve template, because, the outlet of injection boiler and the well head of thickened oil steam-stimulated well have larger distance, generally 2000 meters left and right.Although the steam parameter in the exit of injection boiler can reach the requirement of steam injection, but while through a segment distance, arriving the well head of thickened oil steam-stimulated well, larger energy loss has been arranged, likely there is the underproof situation of steam injection, if with the data creating template obtained in the underproof situation of steam injection, original intention and the meaning of making template have been lost.
Further, described step e also comprises: before at the described target thickened oil steam-stimulated well of collection, after steam injection, stewing well pressure recovers the temperature and pressure data in stage, gather the temperature T 1 of described target thickened oil steam-stimulated well in steam injection process, while only having T1 to reach more than 250 ℃, steam injection is qualified, could make of the described target thickened oil steam-stimulated well that the gathering pressure data that stewing well pressure recovers the stage after steam injection the pressure build-up curve of described target thickened oil steam-stimulated well.The making of the target thickened oil steam-stimulated well being made to pressure build-up curve and front template curve is identical to the requirement of steam injecting temperature.
No matter the present invention is in template construct process or the manufacturing process at the pressure build-up curve of target thickened oil steam-stimulated well, after all not only gathering steam injection, stewing well pressure recovers the temperature and pressure data in stage, also to gather in steam injection process, before perhaps after steam injection, boiling in a covered pot over a slow fire the well pressure recovery stage, gather the temperature data of steam injection, to make template and to carry out actual contrast, the steam injecting temperature data condition qualified as steam injection before stewing well pressure after steam injection recovers the stage, and as evidence, whether feasiblely judge the making template and carry out actual contrast, like this, improved the accuracy of the present invention's application.
In the present invention, for example, template curve comprises with Types Below: ascending-type, steadily down type, fast-descending type, notch cuttype, rise type and pressure-free type after first low, 6 types altogether, wherein, the pressure of pressure-free type is always 0, and without diagram, Fig. 2 to Figure 11 shows the template curve of remaining 5 types.Above-mentioned template curve is by a large amount of measured curves, and produce dynamic regression matching gained in conjunction with the well of handling up, in actual production, the steam injection well of above-mentioned 6 types is after each steam injection finishes, all to drive a well to carry out follow-up operation, for also need to supplement steam injection or again closing well could the situation of operation under, formed repetition and waste on the program of the closing well that drives a well.According to the present invention, template curve has been arranged, can just can judge steam injection efficiency in the situation that do not drive a well, whether determine to drive a well operation or other operations, can reduce the repetition of the closing well that drives a well.
Fig. 2 and Fig. 3 show two types of ascending-type, and these type of curve characteristics are that stewing well pressure is in rising trend gradually after short-term (about a day or a day) adjustment, possess the oil-well strata energy abundance of this type of curvilinear characteristic, and the oil well stream-injection rear output that drives a well is normal.Wherein, in the later stage, in Fig. 2, the speed of pressure rise is faster than Fig. 3.(Fig. 2 is the rising that flex point is arranged, and Fig. 3 is continuous rising substantially)
Fig. 4 and Fig. 5 show two types of steady down type, these type of curve characteristics are that stewing well pressure is gradually steadily or steadily (there is no the decline of flex point) downward trend after short-term correction, these type of curve characteristics are that stewing well pressure is gradually steadily or trend of dropping steadily after short-term (about a day or a day) is adjusted, the oil-well strata energy abundance that possesses this type of curvilinear characteristic, the oil well stream-injection rear output that drives a well is normal.Wherein, the shape of Fig. 4 is protruding upward, and the shape of Fig. 5 is to lower recess.
Fig. 6 and Fig. 7 show two types of fast-descending type, these type of curve characteristics are that stewing well pressure is fast-descending trend, with the steady down type of Fig. 4 and Fig. 5, compare, the fast-descending of fast-descending type is the decline that flex point is arranged, and under this situation, the force value in template curve latter stage is also relatively low, generally differs from an order of magnitude.That is to say, Fig. 5 terminal pressure is 3Mpa or 3Mpa left and right, and Fig. 6 and Fig. 7 also, just in 0.3Mpa or 0.3Mpa left and right, possess the oil-well strata energy deficit of this type of curvilinear characteristic, the steam injection rear moisture situation of height that there will be that drives a well more.Wherein in Fig. 6, pressure drop descends than Fig. 7 more hurry up;
Fig. 8 and Fig. 9 show two types of notch cuttype, class curve characteristics are that pressure starts to be trend of dropping steadily, then sharply descend again, finally be again moderate tone, the oil-well strata energy that possesses this type of curvilinear characteristic has certain deficit, steam injection can not there will be after driving a well or the production declining situation, can consider after-teeming steam or take other well stimulation.The difference of Fig. 8 and Fig. 9: at the steady section in later stage, Fig. 8 is leveling style curve or stable with a slight decline, and the steady section of Fig. 9 in the later stage is steadily increasing;
Figure 10 and Figure 11 show first low rear two types of rising type, these type of curve characteristics are that incipient stage (pressure at stewing initial stage in well stage) pressure significantly descends, then significantly rise again, the oil-well strata energy that possesses this type of curvilinear characteristic has certain deficit, and steam injection drives a well and often occurs that feed flow is poor afterwards.Figure 10 and Figure 11 difference is that, in the back segment ascent stage, Figure 10 rises always, and Figure 11 has risen after a period of time to descend.
For the pressure-free type do not shown in the drawings, stewing well pressure is always 0Mpa.The oil-well strata energy that possesses this type of curvilinear characteristic is in debt serious, can not drive a well, or occurs in high water zone, and the rear appearance that drives a well is high moisture.
In the collection of the present invention to thickened oil steam-stimulated well temperature and pressure data in stewing well pressure recovery stage after steam injection, adopt thickened oil steam-stimulated well pressure curve harvester as shown in Figure 1.Thickened oil steam-stimulated well pressure curve harvester comprises: hoop 1; Oil pipe short circuit 2, be connected in first end 11(Fig. 1 of described hoop, and the first end of each parts is right-hand member); Union 3, be connected to the first end of described oil pipe short circuit 2; End plate 4(also claims blind plate), be connected to the first end of described union 3; Pressure meter 5, be connected on described oil pipe short circuit 2 and between described hoop 1 and described union 3; Be arranged on the thermometer 6 on the first end of end plate, described thermometer has the probe (not shown), and described end plate 3 is provided with connecting hole, described probe along described hoop 1 axially by described connecting hole through described hoop 1.Wherein, hoop 1, oil pipe short circuit 2, union 3 are all tubular part, and end plate 3 is provided with connecting hole, and like this, probe can be deep in the head valve at well head place, records the temperature at well head place.
The present invention is contained on the steam injection well head before steam injection, can read the pressure and temperature data by dial plate, its data are stored in USB flash disk, through the collection to data, can obtain the temperature, pressure curve map in steam injection stage and stewing well stage, the temperature and pressure of electronics curve steam injection part is used for monitoring the steam injection quality.The stewing well part of electron pressure curve is carried out to comparison of classification by block, hole condition, the condition of production, return into pressure stencil, in the situation that do not drive a well, just can judge the situation of steam injection and the situation of stewing well.This harvester can carry out the collection of real-time continuous under HTHP to pressure and temperature, storage.
Further, as Fig. 1, described thickened oil steam-stimulated well pressure curve harvester also comprises: cooling tube 7 is connected to described pressure meter 5 and described stating between oil pipe short circuit 2, with working environment and the manometric life-span of prolongation that guarantees gauge measurement.
Further, the side direction of described oil pipe short circuit is provided with installing hole, and described pressure meter is connected on described installing hole, and pressure meter, according to the side direction at the oil pipe short circuit, like this, can utilize the lateral space of oil pipe short circuit, makes whole device integral body comparatively compact.
Further, described thickened oil steam-stimulated well pressure curve harvester also comprises: high pressure resistant valve 8, with described installing hole, be connected, described pressure meter 5 is connected on described installing hole by described cooling tube 7 and described high pressure resistant valve 8 successively, in order to control steam injection and gaging pressure.
Further, described thermometer 6 is USB flash disk memory type temperature record sheet, and thermometer is because being that probe connects, and general electronic thermometer is just passable.Just added the USB flash disk storage., like this, can automatically obtain temperature data record comparatively closely.The image data frequency is encrypted, and can reach 5 minutes data, and energy continuous acquisition 5-10 days, with USB flash disk, reads rear generation electronic document, instructs the production of handling up well.Further, described thickened oil steam-stimulated well pressure curve harvester also comprises: the computer be connected with described USB flash disk memory type temperature record sheet.After completing collection, with USB flash disk, by gathered data reading and be stored in computer, by the excel Software on Drawing, go out the electronics curve.
Further, the second end 12 of hoop connects tubing valve or the sleeve valve on the steam injection well heads, for example connects the tubing valve of production tree, like this, just can be convenient for measuring.
Further, described pressure meter is the USB flash disk memory-type, and in harvester, preferred CYR-2009S USB flash disk memory-type pressure recorder, like this, can obtain pressure data record comparatively closely automatically.
Operating principle of the present invention is as follows: above-mentioned thickened oil steam-stimulated well pressure curve harvester, before steam injection, be contained on the steam injection well head, probe stretches in well, set every 5 minutes and gather a secondary data, continue to gather 3-7 days after steam injection, until pressure stability, the about 8-12 days of this process, at ordinary times can sense data by dial plate.After completing collection, with USB flash disk, by gathered data reading and be stored in computer, can carry out the data processing with conventional software, for example by the excel Software on Drawing, go out the electronics curve.
The temperature and pressure of electronics curve steam injection part is used for monitoring the steam injection quality.The stewing well part of electron pressure curve is carried out to comparison of classification by block, hole condition, the condition of production, return into pressure stencil.
Recycle pressure stencil steam injection efficiency is judged fast, masterplate, along with the condition of production finds that situation is revised at any time at any time, makes it to serve better production.
Method of the present invention, with strong points, by method of the present invention, can be to blockette, hole condition, condition of production judgement steam injection efficiency, especially to same well or the judgement accurate quick more of the steam injection efficiency of the well of same block on every side.The present invention can be in each oil field, each block first utilizes own block oil well dynamically and the gained pressure curve is drawn the masterplate of oneself, then the target well is carried out to data acquisition, is then contrasted, can extensive use.
The foregoing is only the schematic specific embodiment of the present invention, not in order to limit scope of the present invention.For each ingredient of the present invention can mutually combine under the condition of not conflicting, any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification, all should belong to the scope of protection of the invention.
Claims (6)
1. a thickened oil steam-stimulated well pressure curve gathers and application process, it is characterized in that, the collection of described thickened oil steam-stimulated well pressure curve and application process comprise:
Steps A: gather a thickened oil steam-stimulated well stewing well pressure after steam injection and recover the temperature and pressure data in stage, set every N minute and gather a secondary data, the collection position of temperature and pressure data is the well head place;
Step B: according to the pressure build-up curve of the described thickened oil steam-stimulated well of temperature and pressure data creating of the described thickened oil steam-stimulated well gathered, and record the subsequent production trend of a described thickened oil steam-stimulated well after this steam injection;
Step C: make a plurality of pressure build-up curves after the repeatedly steam injection of a described thickened oil steam-stimulated well or make the pressure build-up curve of a plurality of thickened oil steam-stimulated wells in same oil recovery block, and record corresponding subsequent production trend;
Step D: form one or more pressure build-up curve templates of the thickened oil steam-stimulated well of a described thickened oil steam-stimulated well or described oil recovery block according to step C, and determine the corresponding subsequent production trend of each pressure build-up curve template.
2. thickened oil steam-stimulated well pressure curve as claimed in claim 1 gathers and application process, it is characterized in that, the collection of described thickened oil steam-stimulated well pressure curve and application process also comprise step e: the target thickened oil steam-stimulated well is carried out to steam injection, gather described target thickened oil steam-stimulated well stewing well pressure after steam injection and recover the temperature and pressure data in stage, set every N minute and gather a secondary data, the collection position of temperature and pressure data is the well head place;
Make the pressure build-up curve of this target thickened oil steam-stimulated well, the pressure build-up curve of this target thickened oil steam-stimulated well and described pressure build-up curve template are contrasted, the home type of judgement target thickened oil steam-stimulated well, according to the home type of target thickened oil steam-stimulated well, judge the subsequent production trend of this target thickened oil steam-stimulated well.
3. thickened oil steam-stimulated well pressure curve as claimed in claim 2 gathers and application process, it is characterized in that, according to the Production trend of target thickened oil steam-stimulated well, takes follow-up technical measures.
4. thickened oil steam-stimulated well pressure curve as claimed in claim 3 gathers and application process, it is characterized in that, described follow-up technical measures comprise: the normal exploitation that drives a well, direct after-teeming steam and take energization, viscosity reduction or displacement of reservoir oil measure does not drive a well.
5. thickened oil steam-stimulated well pressure curve as claimed in claim 2 gathers and application process, it is characterized in that, described steps A also comprises: before at thickened oil steam-stimulated well of described collection, after steam injection, stewing well pressure recovers the temperature and pressure data in stage, gather the temperature T of a described thickened oil steam-stimulated well in steam injection process, while only having T to reach more than 250 ℃, steam injection is qualified, could make described template with the thickened oil steam-stimulated well the gathered pressure data that stewing well pressure recovers the stage after steam injection.
6. thickened oil steam-stimulated well pressure curve as claimed in claim 2 gathers and application process, it is characterized in that, described step e also comprises: before at the described target thickened oil steam-stimulated well of collection, after steam injection, stewing well pressure recovers the temperature and pressure data in stage, gather the temperature T 1 of described target thickened oil steam-stimulated well in steam injection process, while only having T1 to reach more than 250 ℃, steam injection is qualified, could make of the described target thickened oil steam-stimulated well that the gathering pressure data that stewing well pressure recovers the stage after steam injection the pressure build-up curve of described target thickened oil steam-stimulated well.
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