CN103883320A - Logging-while-drilling method based on time lapse - Google Patents
Logging-while-drilling method based on time lapse Download PDFInfo
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- CN103883320A CN103883320A CN201410116220.0A CN201410116220A CN103883320A CN 103883320 A CN103883320 A CN 103883320A CN 201410116220 A CN201410116220 A CN 201410116220A CN 103883320 A CN103883320 A CN 103883320A
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Abstract
The invention discloses a logging-while-drilling method based on the time lapse. The method includes the first step of arranging a first logging-while-drilling tool on the lower portion of a threaded rod and arranging a second logging-while-drilling tool on the upper portion of the threaded rod, the second step of measuring a target stratum through the first logging-while-drilling tool and/or the second logging-while-drilling tool arranged on the threaded rod sequentially at different drilling stages, and the third step of storing stratum information obtained by measuring the target stratum or uploading the stratum information to a collection terminal, wherein the data transmitted actually can be used for carrying out real-time drilling geosteering and formation evaluation, and any two or more sets of actually transmitted or stored data at the different stages can be used for analyzing and estimating reservoir stratums. Through the method, the real-time drilling geosteering and logging while drilling based on the time lapse at the different stages can be achieved, the dynamic changes of reservoir fluid can be timely known, reliable lithological parameters, physical property parameters and oil-gas possibility parameters can be provided for analysis and estimation of logging after drilling, and consequently a reliable basis is provided for planning of follow-up reservoir engineering reserve calculation and development programs.
Description
Technical field
The invention belongs to petroleum well logging technology field, particularly a kind of with boring time-lapse logging method.
Background technology
In drilling process, F invaded formation forms the invaded zone of F, and the characteristic of invaded zone is different from prime stratum characteristic, and log response is often subject to the impact of F intrusion effect.In invasion procedure, the variation of fluid parameter is not the stepped distribution of journey, but a complicated DYNAMIC DISTRIBUTION relevant with the time.The F of invaded formation is the function of pressure reduction between the viscosity of the permeability of time, stratum permeability, degree of porosity, mud cake, F and mobility, well and stratum.Stratum characteristic, because of the impact of above-mentioned factor, As time goes on changes.
In existing cable logging technique, by after finishing drilling, stratum is opened after a period of time and carries out the measurement of down-hole information, and generally only measures 2-3 time, therefore has following shortcoming:
(1) in reservoir, there is mud to invade, can not measure undisturbed formation information;
(2) need to necessarily account for the well time, completion timeliness or oil-gas mining timeliness are bored in impact;
(3) for high angle hole/horizontal well, wireline logging constructional difficulties, easily meets card or well logging failure or well logging time longer, and serious situation even occurs burying instrument, well filling and well and the situation such as scraps.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of with boring time-lapse logging method, the method is by carrying out in different time sections with boring time-lapse logging, realize the dynamic change of Obtaining Accurate reservoir fluid, provide foundation for accurately asking for reservoir parameter.
For solving the problems of the technologies described above, the invention provides one with boring time-lapse logging method, comprising:
In the bottom of screw rod, the first logging while drilling apparatus is set, and on the top of described screw rod, the second logging while drilling apparatus is set; Successively in the stage of creeping into, the stacks stage of drilling well, change drilling tool stage and the drifting stage carried in drilling tool stage, finishing drilling, by be arranged on described the first logging while drilling apparatus on described screw rod and/or, described the second logging while drilling apparatus measures formation at target locations; The formation information obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation.
Optionally, described creeping into the stage in drilling well, by being arranged on described the first logging while drilling apparatus on described screw rod and/or described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps: described the first logging while drilling apparatus, described the second logging while drilling apparatus are set as to not responding to switch pump, and open described formation at target locations by the drill bit in described screw rod; In the described formation at target locations being opened, described the first logging while drilling apparatus is at T
0moment measures to obtain the formation information of described formation at target locations for the first time to described formation at target locations; In described screw rod drilling process, described the second logging while drilling apparatus is at T
0' the moment is measured the formation information that obtains described formation at target locations for the second time to described formation at target locations.
Optionally, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, be used for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time, and follow-up formation evaluation comprises the following steps: the obtained described formation information of measuring for the first time, the described formation information of measuring are for the second time stored, and the described formation information of measuring for the first time, the described formation information of measuring are for the second time uploaded to acquisition terminal; Foundation is at T
0moment obtain for the first time measure formation information, at T
0the formation information of the measuring for the second time that ' moment obtains, show that the time interval is Δ T
0the first log and the second log; Wherein, described Δ T
0=T
0'-T
0; Described the first log and the second log are used for to the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation.
Optionally, described in the stacks stage of drilling well, by be arranged on described the first logging while drilling apparatus on described screw rod and/or, to formation at target locations, measurement comprises the following steps described the second logging while drilling apparatus: described the first logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
1moment measures to obtain the formation information of described formation at target locations for the third time to described formation at target locations; In described screw rod decentralization process, described the first logging while drilling apparatus is at T
2moment carries out the 4th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; And/or, described the second logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
1' the moment carries out the 5th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; In described screw rod decentralization process, described the second logging while drilling apparatus is at T
2' the moment carries out the 6th time to described formation at target locations and measures to obtain the formation information of described formation at target locations.
Optionally, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, be used for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation comprises: the obtained described formation information of measuring for the third time, the formation information of described the 4th measurement are stored; Foundation is at T
1the formation information that obtains of moment, at T
2the formation information that moment obtains, show that the time interval is Δ T
12the 3rd log and the 4th log; Wherein, described Δ T
12=T
2-T
1; Described the 3rd log and the 4th log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time; And/or, the obtained described formation information of measuring for the 5th time, the described formation information of measuring for the 6th time are stored, and/or the formation information of described the 5th measurement, the described formation information of measuring for the 6th time are uploaded to acquisition terminal; Foundation is at T
1the formation information that obtains of ' moment, at T
2the formation information that ' the moment obtains, show that the time interval is Δ T
12' the 5th log and the 6th log; Wherein, described Δ T
12'=T
2'-T
1'; Described the 5th log and the 6th log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time.
Optionally, described the changing the drilling tool stage of drilling well, by being arranged on described the first logging while drilling apparatus on described screw rod and described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps: described the first logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
3moment carries out the 7th time to described formation at target locations and measures to obtain described formation at target locations information; In described screw rod decentralization process, described the first logging while drilling apparatus is at T
4moment carries out the 8th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; And, described the second logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
3' the moment carries out the 9th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; In described screw rod decentralization process, described the second logging while drilling apparatus is at T
4' the moment carries out the tenth time to described formation at target locations and measures to obtain the formation information of described formation at target locations.
Optionally, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, be used for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation comprises: the obtained described formation information of measuring for the 7th time, the formation information of described the 8th measurement are stored; Foundation is at T
3the formation information that obtains of moment, at T
4the formation information that moment obtains, show that the time interval is Δ T
34the 7th log and the 8th log; Wherein, described Δ T
34=T
4-T
3, described the 7th log and the 8th log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time; And, the obtained described formation information of measuring for the 9th time, the formation information of measuring for the described ten time are stored; Foundation is at T
3the 9th formation information that obtains of ' moment, at T
4the formation information that ' the moment obtains, show that the time interval is Δ T
34' the 9th log and the tenth log; Wherein, described Δ T
34'=T
4'-T
3'; Described the 9th log and the tenth log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time.
Optionally, describedly in the finishing drilling of drilling well, carry the drilling tool stage, by being arranged on described the first logging while drilling apparatus on described screw rod and described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps: described the first logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
5moment is carried out the tenth one-shot measurement to obtain the formation information of described formation at target locations to described formation at target locations; And/or, described the second logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
5' the moment is carried out the tenth double measurement to obtain the formation information of described formation at target locations to described formation at target locations.
Optionally, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, and foundation is at T
5the formation information of the tenth one-shot measurement that obtains of moment, at T
5the formation information of the tenth double measurement that obtains of ' moment, show that the time interval is Δ T
5the first log and the second log; Wherein, described Δ T
5=T
5'-T
5; Described the 11 log and the 12 log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time.
Optionally, described in the drifting stage of drilling well, by being arranged on described the first logging while drilling apparatus on described screw rod and described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps: described the first logging while drilling apparatus is set as to not responding to switch pump; In described screw rod decentralization process, described the first logging while drilling apparatus is at T
6moment carries out the 13 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
7moment carries out the 14 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; And, described the second logging while drilling apparatus is set as to not responding to switch pump; In described screw rod decentralization process, described the second logging while drilling apparatus is at T
6' the moment carries out the 15 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
7' the moment carries out the 16 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; Described the formation at target locations information of obtaining after formation at target locations is measured is stored, pass logging data processing and RESERVOIR INTERPRETATION evaluation for follow-up time: the obtained described formation information of measuring for the 13 time, the described formation information of measuring for the 14 time are stored; Foundation is at T
6the formation information that obtains of moment, at T
7the formation information that moment obtains, show that the time interval is Δ T
67the 13 log and the 14 log; Wherein, described Δ T
67=T
7-T
6; Described the 13 log and the 14 log are passed to logging data processing and RESERVOIR INTERPRETATION evaluation for follow-up time; And, the obtained described formation information of measuring for the 15 time, the described formation information of measuring for the 16 time are stored; Foundation is at Δ T
6' the 15 formation information that obtains of moment, at Δ T
7the formation information of measuring for the 15 time that the ˊ moment obtains, show that the time interval is Δ T
67' the 16 log and the 16 log; Wherein, described Δ T
67'=Δ T
7'-Δ T
6'; Described the 15 log and the 16 log are passed to logging data processing and RESERVOIR INTERPRETATION evaluation for follow-up time.
Drilling state and Measuring Time point correspondence table
Provided by the invention with boring time-lapse logging method, by the bottom of screw rod, the first logging while drilling apparatus being set, and on the top of screw rod, the second logging while drilling apparatus is set; Simultaneously successively in the stage of creeping into, the stacks stage of drilling well, change in drilling tool stage, finishing drilling and carry drilling tool stage and drifting stage, according to the first logging while drilling apparatus, the second logging while drilling apparatus that are arranged on screw rod, formation at target locations is measured; And the most at last formation at target locations is measured to the rear formation information obtaining and store, be uploaded to acquisition terminal for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation; Realized the real-time geosteering of drilling well and different time sections (drilling well different phase) with bore time-lapse logging, understand in time the dynamic change of reservoir fluid, provide reliable lithology, physical property and oil-gas possibility parameter for boring rear well log interpretation evaluation, and then calculate and development plan formulation provides reliable foundation for follow-up reservoir engineering reserves.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 for the embodiment of the present invention provide with boring time-lapse logging method overall flow schematic diagram;
The process flow diagram in the stage of creeping into that Fig. 2 provides for the embodiment of the present invention;
The process flow diagram in the stacks stage that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 for the embodiment of the present invention provide at the process flow diagram that changes the drilling tool stage;
The process flow diagram of carrying the drilling tool stage in finishing drilling that Fig. 5 provides for the embodiment of the present invention;
The process flow diagram in the drifting stage that Fig. 6 provides for the embodiment of the present invention;
Mud invasion profile schematic diagram one when well logging during that Fig. 7 provides for the embodiment of the present invention;
Mud invasion profile schematic diagram two when well logging during that Fig. 8 provides for the embodiment of the present invention;
Mud invasion profile schematic diagram three when well logging during that Fig. 9 provides for the embodiment of the present invention;
Mud invasion profile schematic diagram four when well logging during that Figure 10 provides for the embodiment of the present invention;
Figure 11 for the embodiment of the present invention provide in the stage of creeping into, in the stacks stage, changing the drilling tool stage, in finishing drilling, carrying the drilling tool stage or during in the drifting stage, the view that screw rod is transferred;
Figure 12 for the embodiment of the present invention provide in the stage of creeping into, in the stacks stage, changing the drilling tool stage, in finishing drilling, carrying the drilling tool stage or during in the drifting stage, the view of putting forward on screw rod;
Wireline logging view after the finishing drilling that Figure 13 provides for the embodiment of the present invention;
Resistivity logging while drilling time-lapse logging curve map when Figure 14 is mud decreased resistance invasion state; And
Resistivity logging while drilling time-lapse logging curve map when Figure 15 is mud increased resistance invasion state.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skills obtain, belongs to the scope of protection of the invention.
The one that the embodiment of the present invention provides is with boring time-lapse logging method, by utilizing several logging while drilling apparatuses in drilling process or after finishing drilling, at different time, same formation at target locations is measured to obtain the formation information (well-log information) of this formation at target locations; And by this obtained formation information processing and the interpretation and evaluation for time-lapse logging, as the oil-gas possibility to reservoir is evaluated, understand well situation of change, for the correction of mud intrusion effect, borehole correction and well safe construction etc. provide foundation, and then grasp mud and invade the impact changing stratum, thereby accurately identify oil (gas) layer, determine oil-water interfaces, calculate comparatively accurate reservoir oil-containing (gas) saturation ratio, permeability etc., can be used for evaluating reservoir and mud and invade the research of mechanism, for oil-gas field development provides guidance.
Refer to Fig. 1, the present invention specifically comprises the steps:
Step 100: in screw rod bottom, the first logging while drilling apparatus is set, and on the top of described screw rod, the second logging while drilling apparatus is set;
In drilling process, the intrusion time of mud is relatively short, according to design and the offset well data of well, formation at target locations is analyzed, and selects to be suitable for the measuring apparatus of this formation at target locations and mud property.For example, in the time carrying out resistivity time-lapse logging, should select as the case may be loggers dark, shallow different investigation depths.In the embodiment of the present invention, instrument combination can be used two logging while drilling apparatuses, that is: the first logging while drilling apparatus, the second logging while drilling apparatus; Wherein, the first logging while drilling apparatus (near drill bit logging while drilling apparatus) can be arranged on the rear of drill bit in screw rod, and the second logging while drilling apparatus can be arranged on the top of screw rod in screw rod or power drill.
Step 200: successively in the stage of creeping into, the stacks stage of drilling well, change drilling tool stage and the drifting stage carried in drilling tool stage, finishing drilling, by be arranged on described the first logging while drilling apparatus on described screw rod and/or, described the second logging while drilling apparatus measures formation at target locations;
In other words, can be according to the feature that in drilling process, the first logging while drilling apparatus, the second logging while drilling apparatus can be walked repeatedly in stratum, in the different phase of drilling well, as creep into stage, stacks stage, change and in drilling tool stage, finishing drilling, put forward the process such as drilling tool stage, drifting stage, repeatedly same formation at target locations is measured to obtain the formation information of this formation at target locations under the different intrusion states of mud at different time points, as formation at target locations electrically, physical property, lithology, oiliness information etc.
Step 300: the formation information obtaining after formation at target locations is measured is stored, and be uploaded to acquisition terminal for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation.
Wherein, the embodiment of the present invention is by same formation at target locations on the one hand, the formation data information that different time points is obtained is stored in measuring apparatus, the embodiment of the present invention is by same formation at target locations on the other hand, the formation data information that different time points is obtained is uploaded to ground data acquisition terminal (ground system) in real time, final realize obtained formation data information for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation, grasp mud and invade the impact changing stratum, thereby accurately identification oil (gas) layer, determine oil-water interfaces, calculate comparatively accurate reservoir oil-containing (gas) saturation ratio, permeability etc.
Particularly:
1,, in embodiment of the present invention step 200, for the stage of creeping into, while creeping into, the first logging while drilling apparatus, the second logging while drilling apparatus are kept at measured formation information (log data) in measuring apparatus, and partial data are uploaded.The data of uploading can be carried out in real time comparative analysis of scene, and storage data are taken out comparative analysis after can instrument to be measured going out well, in order to identify oil (gas) layer, determine oil-water interfaces, to calculate formation porosity etc.In actual mechanical process, this process can only be measured by any instrument in the first logging while drilling apparatus, the second logging while drilling apparatus,, also can measure by two instruments simultaneously meanwhile, if only select a wherein instrument to measure, by this instrument, formation at target locations carried out to whole process and measure; Load on the second logging while drilling apparatus of screw rod or power drilling tool top and load on the first logging while drilling apparatus after drill bit if use simultaneously, can obtain respectively corresponding through formation information feature, the comparative analysis that now can carry out different instruments and obtain stratum characteristic.
Refer to Fig. 2, below to use the first logging while drilling apparatus and the second logging while drilling apparatus to be measured as example simultaneously, this stage of creeping into is described in detail, this stage can comprise the following steps: step 201a, described the first logging while drilling apparatus, described the second logging while drilling apparatus are set as to not responding to switch pump, and open described formation at target locations by the drill bit in described screw rod; Step 201b, in the described formation at target locations being opened, described the first logging while drilling apparatus is at T
0moment measures to obtain the formation information of described formation at target locations for the first time to described formation at target locations; Step 201c, in described screw rod drilling process, described the second logging while drilling apparatus is at T
0' the moment measures for the second time and obtain the described formation information through stratum described formation at target locations.Further, the present embodiment by the obtained first formation information of measuring, measure formation information for the second time and store, and be uploaded to ground data acquisition terminal; Foundation is at T
0the formation information of measurement for the first time that obtains of moment, at T
0the formation information of measurement for the second time that moment obtains, show that the time interval is Δ T
0the first log and the second log; Wherein, Δ T
0=T
0-T
0'; The first log and the second log are used for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time the most at last, and follow-up formation evaluation.
2, in embodiment of the present invention step 200, for the stacks stage, on stacks (changing single), carry while transferring drilling tool, drilling tool will carry out short carrying, and then transfer.The formation at target locations that now drilling tool passes through when entering to bore in the stage of creeping into again, control carry on drilling tool lowering velocity to meet under the prerequisite of connector for logging while drilling well logging condition, the first connector for logging while drilling or the second connector for logging while drilling by obtain compared with the stage of creeping into mud invade deepen time formation at target locations characteristic value (log data), measured formation at target locations characteristic value (log data) is kept in measuring apparatus, instrument to be measured takes out formation at target locations characteristic value (log data) after going out well, can be used for the stage of creeping in the comparative analysis of the formation at target locations data message that obtains.In actual mechanical process, this process can only be measured by any instrument in the first logging while drilling apparatus, the second logging while drilling apparatus,, also can measure by two instruments simultaneously meanwhile, if only select a wherein instrument to measure, by this instrument, formation at target locations only carried out to one-shot measurement; Load on the second logging while drilling apparatus of screw rod or power drilling tool top and load on the first logging while drilling apparatus after drill bit if use simultaneously, can obtain respectively corresponding through formation information feature, the comparative analysis that now can carry out different instruments and obtain stratum characteristic.
It is pointed out that in the time that a drilling rod has been beaten, on stopping to bore, carry, and increase a new drilling rod, this process can be divided into three phases: above carry, make up a joint, transfer (referring to Figure 11-12).The moment of mentioning F stratum on supposing was the first moment, the moment of transferring to F stratum after making up a joint was the second moment, owing to above carrying drilling rod, the drilling rod and to transfer drilling rod shorter to the time interval of formation at target locations of making up a joint, therefore only measure once in the first moment or the second moment.
For improving certainty of measurement, refer to Fig. 3, below to use the first logging while drilling apparatus and the second logging while drilling apparatus to take multiple measurements as example simultaneously, this stacks stage is described in detail, this stage can comprise the following steps: step 202a, is set as not responding to switch pump by described the first logging while drilling apparatus, described the second logging while drilling apparatus; Step 202b carries in process on described screw rod, and described the first logging while drilling apparatus is at T
1moment measures to obtain the formation information of described formation at target locations for the third time to described formation at target locations; Described the second logging while drilling apparatus is at T
1' the moment to described formation at target locations carry out the 5th time measure to obtain the formation information of described formation at target locations; Step 202c, in described screw rod decentralization process, described the first logging while drilling apparatus is at T
2moment carries out the 4th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; Described the second logging while drilling apparatus is at T
2' the moment to described formation at target locations carry out the 6th time measure to obtain the formation information of described formation at target locations.Further, the present embodiment is stored the obtained information of stratum measurement for the third time, the 4th stratum measurement information, the 5th stratum measurement information and the 6th stratum measurement information; Foundation is at T
1the information of stratum measurement for the third time obtained of moment, at T
2the 4th the stratum measurement information that moment obtains, show that the time interval is Δ T
12the 3rd log and the 4th log; Wherein, described Δ T
12=T
2-T
1; Foundation is at T
1' the 5th stratum measurement information obtaining of moment, at T
2' the 6th stratum measurement information obtaining of moment, show that the time interval is Δ T
12' the 5th log and the 6th log; Wherein, described Δ T
12'=T
2'-T
1'; And the 3rd log, the 4th log, the 5th log and the 6th log and the stage of creeping into the first log, the second log curve correlation analysis of obtaining the most at last, for processing and the RESERVOIR INTERPRETATION evaluation of time-lapse logging.
3, in embodiment of the present invention step 200, for changing the drilling tool stage, as change screw rod, drill bit, centralizer etc., and screw rod will all propose well and then transfer, and in this process, the first logging while drilling apparatus, the second logging while drilling apparatus are by the formation at target locations of again passing by well track.Control screw rod propose lowering velocity to meet under the prerequisite of logging while drilling apparatus well logging condition, utilize the first connector for logging while drilling, the second connector for logging while drilling to obtain mud and invade the stratum characteristic information after heighten degree, and be kept at (test is the measurement to full well section) in instrument, after going out well, takes out by instrument log data.In actual mechanical process, this process can only be measured by any instrument in the first logging while drilling apparatus, the second logging while drilling apparatus,, also can measure by two instruments simultaneously meanwhile, if only select a wherein instrument to measure, by this instrument, formation at target locations only carried out to one-shot measurement; Load on the second logging while drilling apparatus of screw rod or power drilling tool top if use simultaneously and load on the first logging while drilling apparatus after drill bit, can obtain respectively corresponding through formation information feature, the comparative analysis that now can carry out different instruments and obtain stratum characteristic, in order to identify oil (gas) layer, determine oil-water interfaces, to calculate formation porosity, permeability, oil saturation etc.
For example, in drilling process, because the engineering reasons such as bit life need to repeatedly pull out of hole with bit change more, this process can be divided into three phases: above carry, bit change, transfer (referring to Figure 11-12).The moment of mentioning F stratum on supposing was the 3rd moment, the moment of transferring to F stratum after making up a joint was the 4th moment, owing to above carrying, bit change, to transfer screw rod long to the time interval of formation at target locations, therefore the 3rd moment or each measurement once of the 4th moment, the time difference of utilizing put-on and delegated each time to produce repeatedly measures formation at target locations, carry out resistivity contrast (process with stacks is similar), and then carry out processing and the interpretation and evaluation of front and back.
Refer to Fig. 4, below to use the first logging while drilling apparatus and the second logging while drilling apparatus to take multiple measurements as example simultaneously, this is changed the drilling tool stage and is described in detail, this stage can comprise the following steps: step 203a, is set as not responding to switch pump by described the first logging while drilling apparatus, described the second logging while drilling apparatus; Step 203b carries in process on described screw rod, and described the first logging while drilling apparatus is at T
3moment carries out the 7th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; Described the second logging while drilling apparatus is at T
3' the moment to described formation at target locations carry out the 9th time measure to obtain the formation information of described formation at target locations; Step 203c, in described screw rod decentralization process, described the first logging while drilling apparatus is at T
4moment carries out the 8th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; Described the second logging while drilling apparatus is at T
4' the moment to described formation at target locations carry out the tenth time measure to obtain the formation information of described formation at target locations.Further, the present embodiment is stored the 7th time obtained stratum measurement information, the 8th stratum measurement information, the 9th stratum measurement information and the tenth stratum measurement information; Foundation is at T
3the 7th stratum measurement information obtaining of moment, at T
4the 8th the stratum measurement information that moment obtains, show that the time interval is Δ T
34the 7th log and the 8th log; Wherein, described Δ T
34=T
4-T
3; Foundation is at T
3' the 9th stratum measurement information obtaining of moment, at T
3' the tenth stratum measurement information obtaining of moment, show that the time interval is Δ T
34' the 9th log and the tenth log; Wherein, described Δ T
34'=T
4'-T
3'; And the 3rd log the 4th log the 5th log and the 6th log curve correlation analysis of obtaining of the first log that the 7th log, the 8th log, the 9th log and the tenth log obtain with the stage of creeping into respectively the most at last and the second log, stacks stage, for processing and the RESERVOIR INTERPRETATION evaluation of time-lapse logging.
4,, in embodiment of the present invention step 200, for carrying the drilling tool stage in finishing drilling, the first logging while drilling apparatus in screw rod, the second logging while drilling apparatus are by the formation at target locations of passing by well track again.Controlling screw rod proposition speed to meet under the prerequisite of connector for logging while drilling well logging condition, utilize the first logging while drilling apparatus in screw rod, the characteristic information that the second logging while drilling apparatus obtains formation at target locations, and be kept in instrument, after going out well, takes out by instrument log data.In actual mechanical process, this process can only be measured by any instrument in the first logging while drilling apparatus, the second logging while drilling apparatus,, also can measure by two instruments simultaneously meanwhile, if only select a wherein instrument to measure, by this instrument, formation at target locations only carried out to one-shot measurement; Load on the second logging while drilling apparatus of screw rod or power drilling tool top if use simultaneously and load on the first logging while drilling apparatus after drill bit, can obtain respectively corresponding through formation information feature, the comparative analysis that now can carry out different instruments and obtain stratum characteristic, in order to identify oil (gas) layer, determine oil-water interfaces, to calculate formation porosity, permeability, oil saturation etc.
Refer to Fig. 5, below to use the first logging while drilling apparatus and the second logging while drilling apparatus to take multiple measurements as example simultaneously, describe in detail to carrying the drilling tool stage in this finishing drilling, this stage can comprise the following steps: step 204a, is set as not responding to switch pump by described the first logging while drilling apparatus, described the second logging while drilling apparatus; Step 204b carries in process on described screw rod, and described the first logging while drilling apparatus is at T
5moment is carried out the tenth one-shot measurement to obtain the formation information of described formation at target locations to described formation at target locations; Described the second logging while drilling apparatus is at T
5' the moment carries out the tenth double measurement to obtain the formation information of described formation at target locations to described formation at target locations; Foundation is at T
5a the ten stratum measurement information obtaining of moment, at T
5' the 12 stratum measurement information obtaining of moment, show that the time interval is Δ T
5the 11 log and the 12 log; Wherein, described Δ T
5=T
5'-T
5; And the 3rd log the 4th log the 5th log and the 6th log that obtain of the first log that the 11 log, the 12 log obtain with the stage of creeping into respectively the most at last and the second log, stacks stage, change the 7th log the 8th log the 9th log and the tenth log curve correlation analysis that the drilling tool stage obtains, for processing and the RESERVOIR INTERPRETATION evaluation of time-lapse logging.
5, in embodiment of the present invention step 200, for the drifting stage, in the time of finishing drilling drifting screw rod transfer on carry the stage, the first logging while drilling apparatus in screw rod, the formation at target locations that the second logging while drilling apparatus passes by whole well, control drilling tool transfer upward strain speed to meet under the prerequisite of connector for logging while drilling well logging condition, utilize the first logging while drilling apparatus, the second logging while drilling apparatus in screw rod again to measure to obtain formation at target locations and be subject to mud to invade the feature while further intensification, and survey data is stored in instrument, after going out well, takes out by instrument data.In actual mechanical process, this process can only be measured by any instrument in the first logging while drilling apparatus, the second logging while drilling apparatus,, also can measure by two instruments simultaneously meanwhile, if only select a wherein instrument to measure, by this instrument, formation at target locations only carried out to one-shot measurement; Load on the second logging while drilling apparatus of screw rod or power drilling tool top if use simultaneously and load on the first logging while drilling apparatus after drill bit, can obtain respectively corresponding through formation information feature, the comparative analysis that now can carry out different instruments and obtain stratum characteristic, in order to identify oil (gas) layer, determine oil-water interfaces, to calculate formation porosity, permeability, oil saturation etc.
Generally, go into the well smoothly in order to guarantee cable instrument, conventionally before electrical measurement, to carry out drifting, now, logging while drilling apparatus (the first logging while drilling apparatus, the second logging while drilling apparatus) can be installed on screw rod, by on carry or under be rivals in a contest and all bored the layer of turning up the soil and carry out time-lapse logging, certainly, also can carry out time-lapse logging (referring to Figure 11-12) to target targetedly.
Refer to Fig. 6, below to use the first logging while drilling apparatus and the second logging while drilling apparatus to take multiple measurements as example simultaneously, describe in detail to carrying the drilling tool stage in this finishing drilling, this stage can comprise the following steps: step 205a, is set as not responding to switch pump by described the first logging while drilling apparatus, described the second logging while drilling apparatus; Step 205b carries in process on described screw rod, and described the first logging while drilling apparatus is at T
6moment carries out the 13 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; Described the second logging while drilling apparatus is at T
6' the moment to described formation at target locations carry out the 15 time measure to obtain the formation information of described formation at target locations; Step 205c, in described screw rod decentralization process, described the first logging while drilling apparatus is at T
7moment carries out the 14 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; Described the second logging while drilling apparatus is at T
7' the moment to described formation at target locations carry out the 16 time measure to obtain the formation information of described formation at target locations.Further, the present embodiment is stored the 13 time obtained stratum measurement information, the 14 stratum measurement information, the 15 stratum measurement information and the 16 stratum measurement information, foundation is at T
6the 13 stratum measurement information obtaining of moment, at T
7the 14 the stratum measurement information that moment obtains, show that the time interval is Δ T
67the 13 log and the 14 log, wherein, described Δ T
67=T
7-T
6, foundation is at T
6' the 15 stratum measurement information obtaining of moment, at T
7' the 16 stratum measurement information obtaining of moment, show that the time interval is Δ T
67' the 15 log and the 16 log, wherein, described Δ T
67'=T
7'-T
6', and the 13 log the most at last, the 14 log, the first log and the second log that the 15 log and the 16 log obtain with the stage of creeping into respectively, the 3rd log the 4th log the 5th log and the 6th log that the stacks stage obtains, change the 7th log the 8th log the 9th log that the drilling tool stage obtains, in finishing drilling, propose the tenth log the 11 log and the comparative analysis respectively of the 12 log that the drilling tool stage obtains, for processing and the RESERVOIR INTERPRETATION evaluation of time-lapse logging.
Optionally, be T by the time of obtaining
1, T
3, T
5, T
7, T
1', T
3', T
5', T
7' and/or T
2, T
4, T
6, T
2', T
4', T
6', the well-log information that two or more Measuring Time points obtain arbitrarily all can be used for processing and the RESERVOIR INTERPRETATION evaluation of time-lapse logging.Wherein time interval Δ T is the time difference between twice measurement.And the well logging during data of any one or more time points that obtain and the data of boring rear wireline logging are contrasted, for processing and the RESERVOIR INTERPRETATION evaluation of time-lapse logging.
With × × oil field × × well is with boring time-lapse logging with example, and accompanying drawing 14-15 is expressed as the log of mud decreased resistance invasion and increased resistance invasion.As can be seen from the figure, can obtain compared with the more real formation resistivity values of prior art with boring induction motor, can get rid of a difficult problem that causes part oil-gas Layer accurately not identify because mud immerses.Simultaneously due to the invasion character difference of mud to Different Strata, according to the measured resistivity value of stratum different time points, not only can reflect the variation on stratum, can also further set up the parameter such as saturation ratio, permeability and change the approximation relation of passing in time, fluid properties in identification reservoir, improve well log interpretation coincidence rate, for oil gas field subsequent development provides more reliable formation parameter.The variation of resistivity can judge the fluid properties of reservoir in conjunction with related data in comprehensive analysis chart, further sets up the Mathematical Modeling that the parameter such as oil saturation, permeability is passed in time.For example analyze accompanying drawing 14(decreased resistance invasion) situation may be for oil-gas Layer, accompanying drawing 15(increased resistance invasion) may be water layer.
Preferably, if carry out wireline logging after the present embodiment finishing drilling, the time that mud is invaded is longer, well logging during data and wireline logging data (consulting accompanying drawing 13) can be carried out to time-lapse logging comparative analysis.
Provided by the invention with boring time-lapse logging method, by in the measured formation at target locations information of well logging different phase (creep into stage, stacks stage, change drilling tool stage and the drifting stage carried in drilling tool stage, finishing drilling), formation information characteristic value while representing successively F different time sections (consulting Fig. 7-10) invaded formation, its beneficial effect is as described below:
1., Obtaining Accurate undisturbed formation information and formation fluid feature, provide foundation for accurately asking for reservoir parameter;
2., in drilling process or drifting, carry out, with boring time-lapse logging, not taking drilling time raising brill completion timeliness, reduction development cost;
3., in high angle hole/horizontal well, can reduce operating risk with boring time-lapse logging, solve the problems such as cable time-lapse logging constructional difficulties;
4., different time sections carries out, with boring time-lapse logging, can understanding the dynamic change of reservoir fluid, for the exploitation of oil-gas reservoir provides measurement parameter.
5., accurately divide oil-water interfaces, identification oil (gas) layer, calculate comparatively accurate reservoir oil-containing (gas) saturation ratio, permeability etc.
It should be noted last that, the above specific embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to example, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. with boring a time-lapse logging method, it is characterized in that, comprising:
In the bottom of screw rod, the first logging while drilling apparatus is set, and on the top of described screw rod, the second logging while drilling apparatus is set;
Successively in the stage of creeping into, the stacks stage of drilling well, change drilling tool stage and the drifting stage carried in drilling tool stage, finishing drilling, by be arranged on described the first logging while drilling apparatus on described screw rod and/or, described the second logging while drilling apparatus measures formation at target locations;
The formation information obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, for the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation.
2. method according to claim 1, is characterized in that, described the creeping into the stage of drilling well, and by being arranged on described the first logging while drilling apparatus on described screw rod and/or described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps:
Described the first logging while drilling apparatus, described the second logging while drilling apparatus are set as to not responding to switch pump, and open described formation at target locations by the drill bit in described screw rod;
In the described formation at target locations being opened, described the first logging while drilling apparatus is at T
0moment measures to obtain the formation information of described formation at target locations for the first time to described formation at target locations;
In described screw rod drilling process, described the second logging while drilling apparatus is at T
0' the moment is measured the formation information that obtains described formation at target locations for the second time to described formation at target locations.
3. method according to claim 2, it is characterized in that, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, is used for the processing of time-lapse logging and carries out matter guiding and RESERVOIR INTERPRETATION evaluation in real time, and follow-up formation evaluation comprises the following steps:
The obtained described formation information of measuring for the first time, the described formation information of measuring are for the second time stored, and the described formation information of measuring for the first time, the described formation information of measuring are for the second time uploaded to acquisition terminal;
Foundation is at T
0moment obtain for the first time measure formation information, at T
0the formation information of the measuring for the second time that ' moment obtains, show that the time interval is Δ T
0the first log and the second log; Wherein, described in
ΔT
0=T
0′-T
0；
Described the first log and the second log are used for to the processing of time-lapse logging and carry out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation.
4. method according to claim 1, is characterized in that, described in the stacks stage of drilling well, by be arranged on described the first logging while drilling apparatus on described screw rod and/or, to formation at target locations, measurement comprises the following steps described the second logging while drilling apparatus:
Described the first logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
1moment measures to obtain the formation information of described formation at target locations for the third time to described formation at target locations; In described screw rod decentralization process, described the first logging while drilling apparatus is at T
2moment carries out the 4th time to described formation at target locations and measures to obtain the formation information of described formation at target locations;
And/or,
Described the second logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
1' the moment carries out the 5th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; In described screw rod decentralization process, described the second logging while drilling apparatus is at T
2' the moment carries out the 6th time to described formation at target locations and measures to obtain the formation information of described formation at target locations.
5. method according to claim 4, it is characterized in that, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, is used for the processing of time-lapse logging and carries out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation comprises:
The obtained described formation information of measuring for the third time, the described formation information of measuring for the 4th time are stored; Foundation is at T
1the formation information that obtains of moment, at T
2the formation information that moment obtains, show that the time interval is Δ T
12the 3rd log and the 4th log; Wherein, described Δ T
12=T
2-T
1; Described the 3rd log and the 4th log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time;
And/or,
The obtained described formation information of measuring for the 5th time, the described formation information of measuring for the 6th time are stored, and/or the formation information of described the 5th measurement, the described formation information of measuring for the 6th time are uploaded to acquisition terminal; Foundation is at T
1the formation information that obtains of ' moment, at T
2the formation information that ' the moment obtains, show that the time interval is Δ T
12' the 5th log and the 6th log; Wherein, described Δ T
12'=T
2'-T
1'; Described the 5th log and the 6th log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time.
6. method according to claim 1, is characterized in that, described the changing the drilling tool stage of drilling well, and by being arranged on described the first logging while drilling apparatus on described screw rod and described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps:
Described the first logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
3moment carries out the 7th time to described formation at target locations and measures to obtain described formation at target locations information; In described screw rod decentralization process, described the first logging while drilling apparatus is at T
4moment carries out the 8th time to described formation at target locations and measures to obtain the formation information of described formation at target locations;
And,
Described the second logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
3' the moment carries out the 9th time to described formation at target locations and measures to obtain the formation information of described formation at target locations; In described screw rod decentralization process, described the second logging while drilling apparatus is at T
4' the moment carries out the tenth time to described formation at target locations and measures to obtain the formation information of described formation at target locations.
7. method according to claim 6, it is characterized in that, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, or be uploaded to acquisition terminal, is used for the processing of time-lapse logging and carries out matter guiding and RESERVOIR INTERPRETATION evaluation in real time in real time, and follow-up formation evaluation comprises:
The obtained described formation information of measuring for the 7th time, the described formation information of measuring for the 8th time are stored; Foundation is at T
3the formation information that obtains of moment, at T
4the formation information that moment obtains, show that the time interval is Δ T
34the 7th log and the 8th log; Wherein, described Δ T
34=T
4-T
3, described the 7th log and the 8th log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time;
And,
The obtained described formation information of measuring for the 9th time, the formation information of measuring for the described ten time are stored; Foundation is at T
3the 9th formation information that obtains of ' moment, at T
4the formation information that ' the moment obtains, show that the time interval is Δ T
34' the 9th log and the tenth log; Wherein, described Δ T
34'=T
4'-T
3'; Described the 9th log and the tenth log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time.
8. method according to claim 1, is characterized in that, describedly in the finishing drilling of drilling well, carries the drilling tool stage, and by being arranged on described the first logging while drilling apparatus on described screw rod and described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps:
Described the first logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
5moment is carried out the tenth one-shot measurement to obtain the formation information of described formation at target locations to described formation at target locations;
And/or,
Described the second logging while drilling apparatus is set as to not responding to switch pump; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
5' the moment is carried out the tenth double measurement to obtain the formation information of described formation at target locations to described formation at target locations.
9. method according to claim 8, is characterized in that, the described formation information by the formation at target locations of obtaining after formation at target locations is measured is stored, and foundation is at T
5the formation information of the tenth one-shot measurement that obtains of moment, at T
5the formation information of the tenth double measurement that obtains of ' moment, show that the time interval is Δ T
5the first log and the second log; Wherein, described Δ T
5=T
5'-T
5; Described the 11 log and the 12 log are passed to processing and the RESERVOIR INTERPRETATION evaluation of logging well for follow-up time.
10. method according to claim 1, is characterized in that:
Described in the drifting stage of drilling well, by being arranged on described the first logging while drilling apparatus on described screw rod and described the second logging while drilling apparatus, to formation at target locations, measurement comprises the following steps: described the first logging while drilling apparatus is set as to not responding to switch pump; In described screw rod decentralization process, described the first logging while drilling apparatus is at T
6moment carries out the 13 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; On described screw rod, carry in process, described the first logging while drilling apparatus is at T
7moment carries out the 14 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; And, described the second logging while drilling apparatus is set as to not responding to switch pump; In described screw rod decentralization process, described the second logging while drilling apparatus is at T
6' the moment carries out the 15 time to described formation at target locations and measures to obtain the formation information of described formation at target locations; On described screw rod, carry in process, described the second logging while drilling apparatus is at T
7' the moment carries out the 16 time to described formation at target locations and measures to obtain the formation information of described formation at target locations;
Described the formation at target locations information of obtaining after formation at target locations is measured is stored, pass logging data processing and RESERVOIR INTERPRETATION evaluation for follow-up time: the obtained described formation information of measuring for the 13 time, the described formation information of measuring for the 14 time are stored; Foundation is at T
6the formation information that obtains of moment, at T
7the formation information that moment obtains, show that the time interval is Δ T
67the 13 log and the 14 log; Wherein, described Δ T
67=T
7-T
6; Described the 13 log and the 14 log are passed to logging data processing and RESERVOIR INTERPRETATION evaluation for follow-up time; And, the obtained described formation information of measuring for the 15 time, the described formation information of measuring for the 16 time are stored; Foundation is at Δ T
6' the 15 formation information that obtains of moment, at Δ T
7the formation information of measuring for the 15 time that the ˊ moment obtains, show that the time interval is Δ T
67' the 16 log and the 16 log; Wherein, described Δ T
67'=Δ T
7'-Δ T
6'; Described the 15 log and the 16 log are passed to logging data processing and RESERVOIR INTERPRETATION evaluation for follow-up time.
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