CN104234702A - Method and device for acquiring position of storage-type logging instrument - Google Patents
Method and device for acquiring position of storage-type logging instrument Download PDFInfo
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- CN104234702A CN104234702A CN201410432133.6A CN201410432133A CN104234702A CN 104234702 A CN104234702 A CN 104234702A CN 201410432133 A CN201410432133 A CN 201410432133A CN 104234702 A CN104234702 A CN 104234702A
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Abstract
The invention discloses a method and a device for acquiring the position of a storage-type logging instrument, wherein the method comprises the following steps of reading pre-acquired drill-column corrected data, wherein the drill-column corrected data are data which are recorded according to a drill-column operating sequence, and the drill-column corrected data comprise actual-length data, measured-length data and corrected data, wherein the actual-length data are the actual length of a currently-operated drill column, and the measured-length data are the measured length, which is determined according to the state change of slips, of the currently-operated drill column; acquiring original time-depth data corresponding to starting time, wherein the original time-depth data are time-depth data which are recorded in real time; correcting the original time-depth data by using the actual-length data, the measured-length data and the corrected data according to an error-compensating formula to obtain the position data of the logging instrument. By adopting the method and the device, the problem of logging data distortion due to the position inaccuracy of a correcting instrument is solved, and the effects of rapidly and accurately correcting the original data and obtaining the accurate position of the instrument are realized.
Description
Technical field
The present invention relates to well logging control field, in particular to a kind of acquisition methods and device of storage type logging instrumented site.
Background technology
Storage type logging is that the conveying of a kind of drilling tool is without cable storage logging technique, be adapted to high angle hole and the operation of long level of displacement borehole logging tool of hole condition inclement condition, it is a kind of new logging technique being different from traditional cable well logging and the well logging of drilling tool handling cable, along with improving constantly of drilling technology level, this logging mode is also more and more subject to the welcome of oil field user.
At present the ground degree of depth tracking technique of storage type logging downhole instrument is on the market improve based on the bit location tracking of compound logging instrument mostly, namely use drawworks sensor to be connected directly between on the main shaft of winch drum, drive drawworks sensor to rotate by main shaft and obtain winch up-downgoing step-by-step counting.
In order to the up-downgoing winch pulses switch that drawworks sensor can be produced is the displacement of hook, computer needs the basic parameter getting winch, be updated in winch model (as shown in Figure 1) and calculate, finally obtain the hook displacement that each pulse is corresponding, wherein, R ' is 12 ' radius of cylinder, the radius that R1 ' is cylinder and wire rope 10 ', the radius that r ' is wire rope, calculates the displacement of hook by above-mentioned three parameters.
Because lower survey and upper survey (bore namely and pull out of hole) process are not continuous print, but will by constantly connecing, unload that drilling tool realizes, when being also hook change in location, downhole instrument not necessarily moves along with hook position and moves, and must judge in conjunction with light, the heavy condition of hook.Generally, when slips is in seat card-like state (i.e. hook underloading), now lower drilling tool adds that the weight of instrument is all added in slips, the weight only having hook that wire rope carries, and during heavy duty (when slips be in unload card-like state time) lower drilling tool is connected with hook, what wire rope carried has been exactly the gross weight of hook, drilling assembly and logger.
Compared in conjunction with the signal (through digital-to-analogue conversion) that weight on hook sensor transmits by the seat slips weight limit value (generally speaking this threshold value arrange slightly larger than hook weight) that arranges, learn the current state of sitting slips, namely bottomhole assembly is connected on hook or and has departed from, if be connected on hook, so the movement of downhole probe is exactly synchronous with hook, if bottomhole assembly has departed from hook, so how hook moves downhole probe and all remains static, comprehensive above method just can obtain downhole logging instruments and fathom (position).
Due to the feature of well logging specialty, its emphasis mainly paid close attention to creeps into (drill bit breaks apart stratum) process, and rise, lower brill is (in order to bit change, screw rod or other reasons unload and connect drilling tool) (logging well, specialty the inside is called process, lower survey) not the emphasis that well logging is paid close attention to, therefore lower to the requirement of boring position precision, often process of making a trip terminates rear brill position error and can reach even above (such as certain the well well depth 3000 meters of 1-2%, under get into the end after degree of depth tracking results be 2950 meters), sustainable in this error of Logging Industry, but be definitely unallowed for well logging industry.
When hardware device is working properly, the main source of this well depth error is the error originated from input of winch model parameter (comprise diameter of cylinder, drum length, to restrict diameter, large number of strands greatly).For example diameter of cylinder is actual is 80cm, but due to measure error, is input as 82cm, so measures the actual displacement that displacement will be greater than hook.
Particularly, the downhole probe of storage type logging is suspended on drilling assembly lower end, in order to downhole probe being sent into shaft bottom, so must depend on drilling crew by control hook motion (for drill string or DHA being sling or transferring), hydraulic tongs (for drill string being connected with DHA or dismantling) and slips (for blocking underground drill stem, drop when preventing hook from departing from drill string accident) cooperation ceaselessly drilling rod (post) is connected with DHA, can enough by downhole probe push down.
Following survey (as shown in Fig. 2 dotted line left half-court) is measured length process for example to computer automatic discrimination drilling tool and is done a simple declaration below, here by its point in order to three phases.Being the process of lower survey on the left of dotted line, is the process of upper survey on the right side of dotted line.
Stage one: lastly transfer after drilling tool process terminates, driller controls winch, hook is upwards carried from low level, (suppose that three, a post is single when mentioning a high position, it is exactly probably about 30 meters, 1. position on the left of dotted line in figure), the drill string and hook that are erected at drilling floor surface 22 couple together by static rear wait two-layer platform driller.
Stage two: after blueness is connected with the orange drill string in down-hole, driller on offshore boring island recycles hydraulic tongs and this drill string and DHA is linked together (in figure on the left of dotted line position) 1., after connection, the slips 23 being positioned at well head 21 can be taken away by driller (driller carries hook and coordinates on now needing), now all wt of DHA all can carry by hook, inside well logging specialty, this process is called ' unloading slips ', weight on hook experienced by by the change of underloading to heavy duty in this process, when this slips state will change by this computer-chronograph, the altitude record of hook place is got off, here H1 is assumed to be.
By getting difference with the last H2 transferring drilling tool process stage three, can obtain general drill string and measure length (underloading time error is larger), this length contains several drilling tools (or pipe nipple) for differentiating in drill string.
In the stage three: driller starts to transfer hook, drill string (comprising downhole probe) now moves down with hook, and in moving process, downhole probe is in recorded downhole image data, the time dark data that ground installation record is original.When hook moves to low level (general 0.6-1.2 rice, in figure on the left of dotted line during position 2.), the driller of offshore boring island, slips is placed between well head and down-hole equipment, now all wt of down-hole equipment all carry by slips, inside well logging specialty, this process is called ' seat slips ', and weight on hook experienced by by the change of heavy duty to underloading in this process, when this slips state will change by this computer-chronograph, the altitude record of hook place is got off, and is assumed to be H2 here.
The continuous blocked operation of three phases, downhole instrument will along with the increase of DHA length be constantly to underground moving, but because instrument is in down-hole, its concrete displacement cannot be learnt, the drill string length be merely able to by newly accessing DHA judges the displacement of downhole instrument, the measurement length accessing drill string (blueness) can be obtained by the difference both H1 and H2, thus indirectly obtain the displacement calculating (having error) of downhole probe, and the actual displacement of downhole probe is known quantity, the i.e. length L (in drilling tool situation of the same type) of drill string, after three phases terminates, to be recorded to upper drill relevant information in " lower survey drill string correction list " file.
In order to head it off, existing storage type logging instrument Deep space tracking common method is divided into two steps to walk:
The first step, in the ground degree of depth real-time tracking stage of downhole instrument, adopts the artificial methods combining drilling tool table revised to carry out single (post) to downhole probe position and revises.Below survey as example: such as current well depth is 3000 meters, instrumented site is 2000 meters, current drill string length 30 meters, and actual measurement displacement only has 29.8 meters, operator is so needed manually brill position to be modified to 2030 meters from 2029.8 meters, otherwise deviation accumulation goes down, will cause down after getting into the end and produce larger depth error.
Second step, due to manual correction instrumented site, mean that putting the degree of depth has at the same time occurred saltus step, that is people is for causing having occurred test leakage, shows on log to be exactly the stretching line of measurement parameter, and this belongs to data leakage in well logging.Post-processed must be carried out for data file dark time original for this reason, processing procedure is generally revise for each depth segment, segmentation method is: if do not have artificial correction instrument device position (perfect condition in the middle of whole upper (lower) well logging, in fact because construction operating mode is very complicated, therefore substantially there is not this situation), be exactly so one section, if there is the correction of artificial participation instrumented site centre, be then divided into multistage to process it.
For example, for the lower survey process in the first step, be divided into 0-2030 rice and two sections, 2030-2950 rice exactly, then carry out calculating correction by adjustment formula to the point in each section, concrete adjustment formula is: instrumented site=(drilling tool cumulative length/measuring section length) × (instrumented site-measuring section starting point degree of depth) after revising.Suppose to want treating depth to be the measuring point of 1888 meters, so through adjustment formulae discovery, can obtain the revised survey mark degree of depth is: (2030/2029.8) * (1888-0)=1888.186 meter.Thus reach the object of correction, solve the downhole probe degree of depth problem of misalignment that winch model parameters input error causes.
As can be seen from describing above, the key realizing the degree of depth accurate tracking of storage type logging downhole instrument ground be instrument ground degree of depth tracking and after surveying to the algorithm that real time record ' time the m-degree of depth ' raw data file (hereinafter referred to as ' time original dark data file ') processes, wherein most importantly instrument ground degree of depth tracking, it by directly have influence on survey after revise original time the validity of dark file and the quality of well-log information and confidence level, can after logging process efficiency (storage type logging often requires that well logging goes out data after terminating at the scene) and data play key effect by examination.
At present, storage type logging uses the comparatively generally above-mentioned downhole instrument degree of depth to follow the tracks of and later stage original data processing method, but it exists following technological deficiency:
1. adopt manual type correction instrumented site.First when to revise and do not have specific requirement, be that the personal habits of operator determines and when revises mostly, next depends on manual work can cause the probability increasing operate miss.
2. because manual amendment does not fix rule, cause later stage data difficult treatment, often need data to be beamed back producer's process under well logging goes wrong situation, the use threshold of instrument is higher, causes larger resistance to after-sale service and marketing work.
3. in different depth section, the measure error of system is different, is namely dynamic change, and existing method segmented mode is too random, and measure errors different often goes adjustment with a coefficient, and adjustment result is incorrect.
4. ' drilling tool is remaining long ' when the method gives tacit consent to different drilling tool type manual slip is identical, in fact different drilling tool type its ' drilling tool is remaining long ' is not identical (see table 1), that is the downhole instrument actual displacement of dissimilar drilling tool switching point and drilling tool length violation, and it is artificial by force according to the accumulative lower dark correction downhole probe position of drilling tool, later stage well-log information serious distortion (as stretching or the compression of gamma ray curve, the phenomenon of similar mosaic appears in variable density gray-scale map) can be caused.
Table 1 different drilling tool type is sat ' remaining length ' after card
| Drilling tool type | Drill collar | Slope drilling rod | Drilling rod |
| Remaining long (m) | 1.1 | 0.9 | 0.8 |
Particularly, transferring slope drilling rod (2#) length is 10m, but actual instrumentation displacement is 10.2m.
There is above-mentioned analysis known, due to manually-operated randomness in prior art, the well-log information serious distortion problem causing not having effective means to solve this type of situation during the dark data file when post-processed is original and cause.
For revising the inaccurate problem causing well-log information distortion of instrumented site in prior art, at present effective solution is not yet proposed.
Summary of the invention
For revising the inaccurate problem causing well-log information distortion of instrumented site in correlation technique, at present effective solution is not yet proposed, for this reason, main purpose of the present invention is the acquisition methods and the device that provide a kind of storage type logging instrumented site, to solve the problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of acquisition methods of storage type logging instrumented site, the method comprises: read the drill string correction data obtained in advance, wherein, drill string correction data are the data according to drill stem operation journal, drill string correction data comprise: true length data, survey long data and correction data, wherein, true length data are the physical length of current operation drill string, and surveying long data is the measurement length changing the current operation drill string determined according to slips state; Obtain corresponding with initial time original time dark data, wherein, time original dark data be real time record time the m-degree of depth data; Use true length data, survey long data and revise data and according to adjustment formula, data dark time original are revised, obtain the position data of logger.
Further, before reading the drill string correction data obtained in advance, acquisition methods comprises: determine the drilling tool quantity in current operation drill string, and according to drilling tool quantity determination physical length; And determine to measure length according to the change of slips state.
Further, determine that the drilling tool quantity in current operation drill string comprises: obtain the first hook height when first time in current operation, slips state changed and the second hook height during the state change of second time slips; Using the difference between the first hook height and the second hook height as measuring drill string length; Read the first difference of measurement drill string length and the drilling tool cumulative length obtained in advance, and the second difference of current measurement drill string length and drilling tool cumulative length; When the second difference is less than the first difference, the value of the drilling tool quantity obtained in advance is added one, obtain the drilling tool quantity after upgrading.
Further, determine that measuring length comprises according to the change of slips state:
Judge whether weight on hook state changes in preset time period; If weight on hook state changes in preset time period, then confirm the change of slips state does not occur; If weight on hook state does not change in preset time period, then confirm the change of slips state occurs.
Further, after judging whether weight on hook state changes in preset time period, acquisition methods comprises: obtain hook height; When hook height meets preset height scope, confirm the change of slips state does not occur; When hook height does not meet preset height scope, confirm the change of slips state occurs.
Further, before reading the drill string correction data that obtain in advance, acquisition methods comprises: generate drill string correction data, wherein, drill string correction data also comprise: with true length data with revise drilling tool corresponding to data and number; Long data more than the drilling tool that reading obtains in advance, wherein, more than drilling tool, long data comprises the remaining long data of drilling tool numbering and correspondence thereof; Long data, true length data and correction data more than corresponding according to the acquisition of drilling tool numbering; Use remaining long data to carry out correction to true length data and correction data and obtain revised true length data and revised correction data.
To achieve these goals, according to a further aspect in the invention, provide a kind of acquisition device of storage type logging instrumented site, this device comprises: the first read module, for reading the drill string correction data obtained in advance, wherein, drill string correction data are the data according to drill stem operation journal, drill string correction data comprise: true length data, survey long data and correction data, wherein, true length data are the physical length of current operation drill string, and surveying long data is the measurement length changing the current operation drill string determined according to slips state; First acquisition module, for obtain corresponding with initial time original time dark data, wherein, time original dark data be real time record time the m-degree of depth data; First correcting module, revises data dark time original according to adjustment formula for using true length data, surveying long data and revising data, obtains the position data of logger.
Further, acquisition device comprises: the first determination module, for determining the drilling tool quantity in current operation drill string, and according to drilling tool quantity determination physical length; And second determination module, for determining to measure length according to the change of slips state.
Further, the first determination module comprises: the second acquisition module, the second hook height when changing with second time slips state for the first hook height when obtaining first time slips state change in current operation; First computing module, for using the difference between the first hook height and the second hook height as measuring drill string length; Second read module, for reading the first difference of measurement drill string length and the drilling tool cumulative length obtained in advance, and the second difference of current measurement drill string length and drilling tool cumulative length; Second computing module, for when the second difference is less than the first difference, adds one by the value of the drilling tool quantity obtained in advance, obtains the drilling tool quantity after upgrading.
Further, the second determination module comprises: judge module, for judging whether weight on hook state changes in preset time period; First confirms module, if changed in preset time period for weight on hook state, then confirms the change of slips state does not occur; Second confirms module, if do not changed in preset time period for weight on hook state, then confirms the change of slips state occurs.
Further, acquisition device comprises: the 3rd acquisition module, for obtaining hook height; 3rd confirms module, during for meeting preset height scope at hook height, confirms the change of slips state does not occur; 4th confirms module, during for not meeting preset height scope at hook height, confirms the change of slips state occurs.
Further, acquisition device comprises: production module, and for generating drill string correction data, wherein, drill string correction data also comprise: with true length data with revise drilling tool corresponding to data and number; Third reading delivery block, for reading long data more than the drilling tool that obtains in advance, wherein, more than drilling tool, long data comprises the remaining long data of drilling tool numbering and correspondence thereof; 4th acquisition module, for long data, true length data and correction data more than drilling tool numbering acquisition correspondence; Second correcting module, carries out correction for using remaining long data to true length data and correction data and obtains revised true length data and revised correction data.
Adopt the present invention, the drill string correction data obtained in advance are used to revise according to data dark time original, in the drill string correction data obtained in advance, by the true length data that the moving law of hook position and the Changing Pattern of weight on hook are determined, survey long data and revise data, and in conjunction with data dark time original, solve and revise the inaccurate problem causing well-log information distortion of instrumented site, avoid the maloperation that causes due to manual intervention in real-time tracking process and the later stage original time dark data documents disposal threshold high and inefficient disadvantage, achieve and quick and precisely revise initial data, obtain the effect of instrumented site accurately.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the winch model schematic diagram according to prior art;
Fig. 2 switches schematic diagram according to the lower survey drilling tool type of prior art;
Fig. 3 is the flow chart of the acquisition methods of storage type logging instrumented site according to the embodiment of the present invention;
Fig. 4 is the flow chart of the acquisition downhole data according to the embodiment of the present invention;
Fig. 5 is the weight on hook change curve according to the embodiment of the present invention;
Fig. 6 is the flow chart determining whether to occur the change of slips state according to the embodiment of the present invention;
Fig. 7 is a kind of flow chart obtaining drill string correction data according to the embodiment of the present invention;
Fig. 8 is the flow chart of the acquisition methods of a kind of storage type logging instrumented site according to the embodiment of the present invention; And
Fig. 9 is the flow chart of the acquisition methods of another kind of storage type logging instrumented site according to the embodiment of the present invention.
Detailed description of the invention
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in manual of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
According to the acquisition device embodiments providing a kind of storage type logging instrumented site, this device can comprise: the first read module, for reading the drill string correction data obtained in advance, wherein, drill string correction data are the data according to drill stem operation journal, drill string correction data comprise: true length data, survey long data and correction data, wherein, true length data are the physical length of current operation drill string, and surveying long data is the measurement length changing the current operation drill string determined according to slips state; First acquisition module, for obtain corresponding with initial time original time dark data, wherein, time original dark data be real time record time the m-degree of depth data; First correcting module, revises data dark time original according to adjustment formula for using true length data, surveying long data and revising data, obtains the position data of logger.
Adopt the present invention, the drill string correction data obtained in advance are used to revise according to data dark time original, in the drill string correction data obtained in advance, by the true length data that the moving law of hook position and the Changing Pattern of weight on hook are determined, survey long data and revise data, and in conjunction with data dark time original, solve and revise the inaccurate problem causing well-log information distortion of instrumented site, avoid the maloperation that causes due to manual intervention in real-time tracking process and the later stage original time dark data documents disposal threshold high and inefficient disadvantage, achieve and quick and precisely revise initial data, obtain the effect of instrumented site accurately.
Wherein, in above-described embodiment, drill string correction data are the data according to drill stem operation journal, drill string correction data comprise: drill stem operation time, true length data, survey long data and correction data, wherein, the drill stem operation time is the time period connecing drill string or unload between drill stem operation, this time can for the time pre-set, and revising data is the instrument original position determined according to the drilling tool cumulative length be entered in advance in system; Obtain corresponding with initial time original time dark data, wherein, time original, dark data are the data in " time the m-degree of depth " of real time record; Use true length data, survey long data and revise data and according to adjustment formula, data dark time original are revised, obtain the position data of logger.Wherein, drill stem operation order is also pre-set operating sequence.
According to the abovementioned embodiments of the present invention, acquisition device can comprise: the first determination module, for determining the drilling tool quantity in current operation drill string, and according to drilling tool quantity determination physical length; And second determination module, for determining to measure length according to the change of slips state.
It should be noted that, the first determination module can comprise: the second acquisition module, the second hook height when changing with second time slips state for the first hook height when obtaining first time slips state change in current operation; First computing module, for using the difference between the first hook height and the second hook height as measuring drill string length; Second read module, for reading the first difference of measurement drill string length and the drilling tool cumulative length obtained in advance, and the second difference of current measurement drill string length and drilling tool cumulative length; Second computing module, for when the second difference is less than the first difference, adds one by the value of the drilling tool quantity obtained in advance, obtains the drilling tool quantity after upgrading.
In another embodiment, the second determination module can comprise: judge module, for judging whether weight on hook state changes in preset time period; First confirms module, if changed in preset time period for weight on hook state, then confirms the change of slips state does not occur; Second confirms module, if do not changed in preset time period for weight on hook state, then confirms the change of slips state occurs.
Particularly, acquisition device can comprise: the 3rd acquisition module, for obtaining hook height; 3rd confirms module, during for meeting preset height scope at hook height, confirms the change of slips state does not occur; 4th confirms module, during for not meeting preset height scope at hook height, confirms the change of slips state occurs.
According to embodiments of the invention, acquisition device can comprise: production module, and for generating drill string correction data, wherein, drill string correction data also comprise: with true length data with revise drilling tool corresponding to data and number; Third reading delivery block, for reading long data more than the drilling tool that obtains in advance, wherein, more than drilling tool, long data comprises the remaining long data of drilling tool numbering and correspondence thereof; 4th acquisition module, for long data, true length data and correction data more than drilling tool numbering acquisition correspondence; Second correcting module, carries out correction for using remaining long data to true length data and correction data and obtains revised true length data and revised correction data.
Modules in the above embodiment of the present invention is the implementation method of corresponding step in corresponding method embodiment respectively.The example that above-mentioned modules realizes with corresponding step is identical with application scenarios, but is not limited to the content disclosed in embodiment of the method.Above-mentioned module may operate in terminal or mobile terminal, can pass through software or hardware implementing.
Fig. 3 is the flow chart of the acquisition methods of storage type logging instrumented site according to the embodiment of the present invention, and the method comprises the steps: as shown in Figure 3
Step S302, reads the drill string correction data obtained in advance.
Wherein, drill string correction data are the data according to drill stem operation journal, drill string correction data comprise: drill stem operation time, true length data, survey long data and correction data, wherein, true length data are the physical length of current operation drill string, and surveying long data is the measurement length changing the current operation drill string determined according to slips state.
Step S304, obtain corresponding with initial time original time dark data.
Wherein, time original dark data be real time record time the m-degree of depth data.
Step S306, uses true length data, surveys long data and revises data and revise data dark time original according to adjustment formula, obtain the position data of logger.
Adopt the present invention, the drill string correction data obtained in advance are used to revise according to data dark time original, in the drill string correction data obtained in advance, by the true length data that the moving law of hook position and the Changing Pattern of weight on hook are determined, survey long data and revise data, and in conjunction with data dark time original, solve and revise the inaccurate problem causing well-log information distortion of instrumented site, avoid the maloperation that causes due to manual intervention in real-time tracking process and the later stage original time dark data documents disposal threshold high and inefficient disadvantage, achieve and quick and precisely revise initial data, obtain the effect of instrumented site accurately.
Wherein, in above-described embodiment, drill string correction data are the data according to drill stem operation journal, drill string correction data comprise: drill stem operation time, true length data, survey long data and correction data, wherein, the drill stem operation time is the time period connecing drill string or unload between drill stem operation, this time can for the time pre-set, and revising data is the instrument original position determined according to the drilling tool cumulative length be entered in advance in system; Obtain corresponding with initial time original time dark data, wherein, time original, dark data are the data in " time the m-degree of depth " of real time record; Use true length data, survey long data and revise data and according to adjustment formula, data dark time original are revised, obtain the position data of logger.Wherein, drill stem operation order is also pre-set operating sequence.
According to the abovementioned embodiments of the present invention, before reading the drill string correction data obtained in advance, acquisition methods can comprise: determine the drilling tool quantity in current operation drill string, and according to drilling tool quantity determination physical length; And determine to measure length according to the change of slips state.
It should be noted that, determine that the drilling tool quantity in current operation drill string can comprise: obtain the first hook height when first time in current operation, slips state changed and the second hook height during the state change of second time slips; Using the difference between the first hook height and the second hook height as measuring drill string length; Read the first difference of measurement drill string length and the drilling tool cumulative length obtained in advance, and the second difference of current measurement drill string length and drilling tool cumulative length; When the second difference is less than the first difference, the value of the drilling tool quantity obtained in advance is added one, obtain the drilling tool quantity after upgrading.
Particularly, connect in the process of physical length (the true length data namely in above-described embodiment) of (unloading) drill string in acquisition at every turn, because the height of dissimilar rig is different, the drill string length that can unload is different, and the construction of some oil recovery factories is lack of standardization, few time many during the oil pipe quantity that drill string comprises, a fixed numbers cannot be used; And except the drill collar except standard in drilling assembly during drillng operation, drilling rod, also comprise the many off-gauge transition pipe nipple or the adjustment pipe nipple that possess difference in functionality simultaneously, pipe nipple length is often within 1 meter, thus drilling tool quantity causes result accuracy more to make to use fixed data to represent in prior art.
Introduce the embodiment of the present invention in detail below in conjunction with accompanying drawing 4, as shown in Figure 4, this embodiment can comprise:
Step S401: obtain the first hook height when first time in current operation, slips state changed and the second hook height during the state change of second time slips.
Wherein, the first hook height H1 during first time slips state change represents, the second hook height H2 during the state change of second time slips represents.
Step S402: the first difference reading measurement drill string length and the drilling tool cumulative length obtained in advance, and the second difference of current measurement drill string length and drilling tool cumulative length.
Wherein, measure drill string length mLen to represent, drilling tool cumulative length rLen represents, the initial value of rLen equals zero, use tm0 to record the absolute value (the measurement drill string length namely obtained in advance in above-described embodiment and the first difference of drilling tool cumulative length) of the difference of last time mLen, rLen, the initial value of tm0 can be set to 999 meters; The absolute value (namely current in above-described embodiment measurement drill string length and the second difference of drilling tool cumulative length) of the difference of mLen, rLen is recorded with tm; In the above-described embodiments use PipCount add up drilling tool counting.
Step S403: judge whether the second difference is greater than the first difference.
Wherein, when the second difference is less than the first difference, perform step S404: the value of drilling tool quantity is added one; When the second difference is greater than the first difference, perform step S405: obtain the drilling tool quantity that drill string comprises.
Step S406: read drilling tool list pointer and move down.
Particularly, because drilling tool list is preserved hereof, therefore so-called " reading drilling tool list pointer to move down " refers to file pointer here, and the object of mobile pointer is the length in order to read in drilling tool file the next drilling tool stored, and is given CurPipLen variable.
Step S407:rLen+=CurPipLen.
Particularly, rLen+=CurPipLen is the grammer (writing a Chinese character in simplified form) of C language, and implication is that current drilling tool length (CurPipLen) is added to (rLen) on drilling tool cumulative length.
Its with below shown in statement be complete equivalence: rLen=rLen+CurPipLen.
Above-mentioned rLen: drilling tool cumulative length; CurPipLen: current drilling tool length.
According to the abovementioned embodiments of the present invention, determine that measuring length can comprise according to the change of slips state: judge whether weight on hook state changes in preset time period; If weight on hook state changes in preset time period, then confirm the change of slips state does not occur; If weight on hook state does not change in preset time period, then confirm the change of slips state occurs.
Particularly, after judging whether weight on hook state changes in preset time period, acquisition methods can also comprise:
Obtain hook height; When hook height does not meet preset height scope and weight on hook state changes, confirm the change of slips state occurs.
By the above embodiment of the present invention, the problem of slips state erroneous judgement effectively can be solved.Slips Count of Status thresholding is introduced and hook high (low) position thresholding concept in the above embodiment of the present invention.Particularly, timing from the change of slips state, in the preset time period of " sampling interval * slips Count of Status thresholding ", whether weight on hook state continues constant, if not change, confirm that slips state there occurs change, if weight on hook state there occurs change in this preset time period, confirm that slips state does not change.Wherein, in above-described embodiment, slips Count of Status thresholding is slips Count of Status.
Such as, suppose that weight on hook sensor sample is spaced apart 1s, the slips Count of Status value slips timing threshold preset is 3, sit slips weight and be limited to 20 tons, there is the change being jumped to 80 tons (>20 ton is heavy duty) by 10 tons (<20 ton is underloading) in weight on hook 10 points and 10 seconds time, slips Count of Status from this moment, look at before that moment from 10 points of 11 seconds situations of change to 10 points of 14 seconds weight on hook data, if gather three data of coming to be respectively 79, 91, 82 tons (being all greater than 20 tons), change so from underloading to heavy duty is exactly effective, confirm that 10 points of actions of unloading slips for 10 seconds are real, also namely change 10 points of 10 seconds slips states, if gather three data of coming to be respectively 50,19,32 tons (second point is less than 20 tons), the weight on hook state change occurred when so confirming 10 points and 10 seconds is an interference, within 10 seconds, does not change at 10 points.
More specifically, usually there is the horizontal segment more than 1500 meters in some oil field (as Sichuan oilfield), frictional resistance is very large, greatly to the weight (horizontal segment DHA weight bear by stratum) almost can offsetting vertical section DHA, hook height curve as shown in Figure 5 and weight on hook curve.Particularly, weight on hook curve in Fig. 5 is less interval fluctuation, maximum value and minimum value distance slips thresholding (upper limit in the preset height scope namely in above-described embodiment) are apart from all very near, therefore there is the situation of " > interference time (adopting interval * slips Count of Status thresholding) " in occasional, in order to filtering is more disturbed, when judging whether the change of slips state occurs, by the situation of change of the weight on hook state in preset time period in conjunction with hook height subsidiary discriminant slips state.Particularly, carry handover operation at hook position (the hook position namely in above-described embodiment) all weight on hook weights within the scope of preset height all not approve, be only arranged at hook height weight on hook state change that default high-low threshold interval (i.e. the preset height scope of above-described embodiment) occurs outward and just confirm as and slips state occurs change.
Such as, when current hook position is 10 meters, weight on hook state becomes underloading from heavy duty, and the anti-interference interval that the hook height subsidiary discriminant now arranged sits slips is 1.2-27 rice, and it is invalid that so current slips state switching is just thought.
As shown in Figure 6, the method embodiment realizes as follows:
Step S601: slips Count of Status is reset.
Step S602: judge whether weight on hook state changes in preset time period.
Wherein, can realize by judging that whether weight on hook state is identical with the weight on hook state of current record, if identical, then confirming that weight on hook state does not change in preset time period, returns and performs step S601; If different, then confirm that weight on hook state changes in preset time period, performs step S603.
Step S603: slips Count of Status is added 1.
Step S604: judge whether slips Count of Status is greater than count threshold.
Wherein, when slips Count of Status is greater than count threshold (i.e. slips Count of Status thresholding), perform step S605; When slips Count of Status is not more than count threshold, returns and perform step S602.
Step S605: judge whether hook position meets preset height scope.
Wherein, when hook does not meet preset height scope, perform step S606: confirm the change of slips state occurs; When hook position meets preset height scope, perform step S607: confirm the change of slips state does not occur.
Above-described embodiment is introduced in detail below in conjunction with accompanying drawing 7:
Step S701: gather weight on hook by sensor.
Step S702: use weight on hook to judge whether the change of slips state occurs.
Particularly, whether there is the change of slips state by weight on hook condition adjudgement, when judging the change of slips state occurs, performing step S703; When judging the change of slips state does not occur, returning and performing step S701.
Step S703: judge whether slips state is changed to and unload slips.
Wherein, in a case of yes, step S704 is performed; In a case of no, step S705 is performed.
Step S704: record current hook position H1.
Step S705: record current hook position H2.
Step S706: the position of logger is designated as the lower degree of depth of current drilling tool accumulation.
Step S707: judge whether the drilling tool quantity that current access drill string comprises is greater than zero.
Wherein, in a case of yes, step S708 is performed; In a case of no, step S709 is performed.
Step S708: record drilling tool quantity and physical length that current access drill string comprises.
In this step, while recording the drilling tool quantity and physical length that current access drill string comprises, the lower degree of depth of current drilling tool accumulation can be calculated.
Step S709: judge whether to terminate logging operation.
Wherein, if so, then terminate; If not, then return and perform step S701.
H1 in above-described embodiment: hook position when unloading slips (weight on hook switches to heavy duty by underloading), in lower survey process, this point is generally positioned at a high position (connecing drill string); H2: hook position during seat slips (weight on hook switches to underloading by heavy duty), in lower survey process, this point is generally positioned at low level.
From above-described embodiment, in above-mentioned steps S706, instrumented site of going into the well when sitting slips is set to the accumulative lower degree of depth of current drilling tool by force, and its object mainly contains following 2 points: 1. convenient operation person carries out degree of depth tracking and monitoring; 2. guarantee to rise when connecing (unloading) current drill string make a little accumulative lower with drilling tool table drilling tool dark consistent, be convenient to the later stage original time dark data automatic business processing.By above-described embodiment, a drill string carries out an adjustment correction, avoids that segmentation is long causes occurring that a different measure errors coefficient goes the problem adjusted.
The lower degree of depth of current drilling tool accumulation in above-described embodiment is relevant with the value of H2-H1, and also relevant with seat slips state, after sitting card, the first step makes exactly: the current hook height of H1=, even second step: the accumulative lower degree of depth of downhole probe position=current drilling tool.
In the above embodiment of the present invention, before reading the drill string correction data that obtain in advance, acquisition methods can comprise: generate drill string correction data, wherein, drill string correction data can also comprise: with true length data with revise drilling tool corresponding to data and number; Long data more than the drilling tool that reading obtains in advance, wherein, more than drilling tool, long data comprises the remaining long data of drilling tool numbering and correspondence thereof; Long data, true length data and correction data more than corresponding according to the acquisition of drilling tool numbering; Use remaining long data to carry out correction to true length data and correction data and obtain revised true length data and revised correction data.
Be the brief introduction of the drill string correction list obtained in advance in table 2, drill string correction list comprises one or more drill string correction data.As shown in table 2, drill string correction data according to time interocclusal record, this time comprises initial time and termination time, drilling tool quantity wherein and true length data and survey long data and all can be obtained by above-described embodiment, does not repeat them here.Repair on illustrating in table 2 and bore position and be correction data in above-described embodiment.
Table 2
The data acquiring frequency required during storage type logging operation is higher, the data volume that a bite well stores is generally more than 100,000, be not easy to very much inquiry and location, once there is unusual service condition, the data processing work amount in later stage and skill require all quite high, often efficiency is lower in the later stage data process of therefore existing storage type logging instrument, and pass through the above-mentioned list of the embodiment of the present invention, whether user only needs to check that information in table just can understand the whole process data of well logging correct, very clear, simultaneously for dark datamation process time original provides advantage.
Wherein, more than the drilling tool in above-described embodiment, long data also can be showed by tabular form, and table 3 is the brief introduction of different drilling tool type slips height column table.
Sitting long difference more than slips drilling tool due to drilling tool type difference may cause the degree of depth to misplace, by the drilling tool type slips height column table in this embodiment can to drill string correction list and original time dark data carry out auto modification.
Table 3
| Row name | Parameter declaration |
| Drilling tool is numbered | Transfer drilling tool numbering (field number) of first different drilling tool type |
| Remaining long | Dissimilar drilling tool when sitting slips drilling tool top to the vertical distance of drilling floor surface |
In the above-described embodiments, can find according to " the drilling tool numbering " in long list record more than drilling tool dissimilar in table 3 correction (on) under corresponding record in the drill string correction list of surveying, then according to long data more than in long list more than dissimilar drilling tool to the true length data in drill string correction list and on repair brill position and revise.Below survey as example, correction formula is as follows:
True length=current true length after changing the drill string correction at drilling tool type place-(the remaining length of current drilling tool type-above organize the remaining length of drilling tool type).Particularly, if do not change drilling tool type, long data remains unchanged in fact.
It should be noted that, according to current (on) under survey drill string correction list in initial time and the termination time in data dark time original, find corresponding record segment, the degree of depth of all measuring points in record segment is carried out revising the position data obtaining logger according to correction formula.
By above-described embodiment, the drill string correction list of upper (lower) survey and original time dark data after revising, eliminate the impact that different drilling tool type causes degree of depth tracking data, then adjustment processing carried out to data dark time original, obtain position data.
Introduce the present invention in detail below in conjunction with Fig. 8, as shown in Figure 8, this invention can comprise the steps:
Step S801: read drill string correction list records.
Wherein, drill string correction list records comprises the drill string correction data in one or more above-described embodiment.
Step S802: the record pointer of dark data time original according to the initial time location of drill string correction data.
Step S803: dark data trailer when whether the record pointer of dark data reaches original when judging original.
Wherein, if not, then step S804 is performed; If so, then terminate.
Step S804: the data of the record segment that dark data are corresponding when using drill string correction data correction original by adjustment formula.
Particularly, adjustment formula is: position data=above repair bores position (the correction data namely in above-described embodiment)+[(true length data/survey long data) * (time deep drilling position-above repair brill position)].
As shown in Figure 9, from bore position revise list obtain repair bore position 4441.8301, true length data are 28.360, survey long data be 28.812, time deep drilling position be 4441.8301.
Step S805: when judging original, whether the measuring point time of dark data is greater than the termination time of drill string correction data measuring point.
Wherein, if so, then step S806 is performed; If not, execution step S803 is returned.
Step S806: the record pointer of drill string correction list is added one.
Step S807: judge whether the record pointer of drill string correction list reaches the afterbody of drill string correction list.
Wherein, if terminate; If not, execution step S801 is returned.
Pass through above-described embodiment, innovative point of the present invention is that drill string listing file is revised in the upper (lower) survey utilizing real-time automatic tracking method to generate, the whole process of what this file was brief and concise have recorded logging operation, be described according to the actual conditions of drillng operation, be also convenient in well logging, occur that unusual service condition (sensor degradation etc.) user searches problem and problem analysis while the later stage, dark data file created advantage when computer automation correction is original.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
As can be seen from the above description, present invention achieves following technique effect:
Adopt the present invention, the drill string correction data obtained in advance are used to revise according to data dark time original, in the drill string correction data obtained in advance, by the true length data that the moving law of hook position and the Changing Pattern of weight on hook are determined, survey long data and revise data, and in conjunction with data dark time original, solve and revise the inaccurate problem causing well-log information distortion of instrumented site, avoid the maloperation that causes due to manual intervention in real-time tracking process and the later stage original time dark data documents disposal threshold high and inefficient disadvantage, achieve and quick and precisely revise initial data, obtain the effect of instrumented site accurately.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. an acquisition methods for storage type logging instrumented site, is characterized in that, comprising:
Read the drill string correction data obtained in advance, wherein, described drill string correction data are the data according to drill stem operation journal, described drill string correction data comprise: true length data, survey long data and correction data, wherein, described true length data are the physical length of current operation drill string, and described survey long data is the measurement length changing the current operation drill string determined according to slips state;
Obtain corresponding with described initial time original time dark data, wherein, described original time dark data be real time record time the m-degree of depth data;
Use described true length data, described survey long data and described correction data according to adjustment formula to described original time dark data revise, obtain the position data of logger.
2. acquisition methods according to claim 1, is characterized in that, before reading the drill string correction data obtained in advance, described acquisition methods comprises:
Determine the drilling tool quantity in described current operation drill string, and determine described physical length according to described drilling tool quantity; And
Described measurement length is determined according to described slips state change.
3. acquisition methods according to claim 2, is characterized in that, determines that the drilling tool quantity in described current operation drill string comprises:
Obtain the first hook height when first time in current operation, slips state changed and the second hook height during the state change of second time slips;
Using the difference between described first hook height and described second hook height as measuring drill string length;
Read the first difference of measurement drill string length and the drilling tool cumulative length obtained in advance, and the second difference of current measurement drill string length and drilling tool cumulative length;
When described second difference is less than described first difference, the value of the described drilling tool quantity obtained in advance is added one, obtain the drilling tool quantity after upgrading.
4. acquisition methods according to claim 2, is characterized in that, determines that described measurement length comprises according to described slips state change:
Judge whether weight on hook state changes in preset time period;
If described weight on hook state changes in preset time period, then confirm the change of described slips state does not occur;
If described weight on hook state does not change in preset time period, then confirm the change of described slips state occurs.
5. acquisition methods according to claim 4, is characterized in that, after judging whether described weight on hook state changes in preset time period, described acquisition methods comprises:
Obtain hook height;
When described hook height meets preset height scope, confirm the change of described slips state does not occur;
When described hook height does not meet preset height scope, confirm the change of described slips state occurs.
6. acquisition methods according to claim 1, is characterized in that, before reading the drill string correction data obtained in advance, described acquisition methods comprises:
Generate described drill string correction data, wherein, described drill string correction data also comprise: the drilling tool corresponding with described true length data and described correction data is numbered;
Long data more than the drilling tool that reading obtains in advance, wherein, more than described drilling tool, long data comprises the remaining long data of described drilling tool numbering and correspondence thereof;
Corresponding described remaining long data, described true length data and described correction data are obtained according to described drilling tool numbering;
Use described remaining long data to carry out correction to described true length data and described correction data and obtain revised true length data and revised correction data.
7. an acquisition device for storage type logging instrumented site, is characterized in that, comprising:
First read module, for reading the drill string correction data obtained in advance, wherein, described drill string correction data are the data according to drill stem operation journal, described drill string correction data comprise: true length data, survey long data and correction data, wherein, described true length data are the physical length of current operation drill string, and described survey long data is the measurement length changing the current operation drill string determined according to slips state;
First acquisition module, for obtain corresponding with described initial time original time dark data, wherein, described original time dark data be real time record time the m-degree of depth data;
First correcting module, for use described true length data, described survey long data and described correction data according to adjustment formula to described original time dark data revise, obtain the position data of logger.
8. acquisition device according to claim 7, is characterized in that, described acquisition device comprises:
First determination module, for determining the drilling tool quantity in described current operation drill string, and determines described physical length according to described drilling tool quantity; And
Second determination module, for determining described measurement length according to described slips state change.
9. acquisition device according to claim 8, is characterized in that, described first determination module comprises:
Second acquisition module, the second hook height when changing with second time slips state for the first hook height when obtaining first time slips state change in current operation;
First computing module, for using the difference between described first hook height and described second hook height as measuring drill string length;
Second read module, for reading the first difference of measurement drill string length and the drilling tool cumulative length obtained in advance, and the second difference of current measurement drill string length and drilling tool cumulative length;
Second computing module, for when described second difference is less than described first difference, adds one by the value of the described drilling tool quantity obtained in advance, obtains the drilling tool quantity after upgrading.
10. acquisition device according to claim 8, is characterized in that, described second determination module comprises:
Judge module, for judging whether weight on hook state changes in preset time period;
First confirms module, if changed in preset time period for described weight on hook state, then confirms the change of described slips state does not occur;
Second confirms module, if do not changed in preset time period for described weight on hook state, then confirms the change of described slips state occurs.
11. acquisition device according to claim 10, is characterized in that, described acquisition device comprises:
3rd acquisition module, for obtaining hook height;
3rd confirms module, for when described hook height meets preset height scope, confirms the change of described slips state does not occur;
4th confirms module, for when described hook height does not meet preset height scope, confirms the change of described slips state occurs.
12. acquisition device according to claim 7, is characterized in that, described acquisition device comprises:
Production module, for generating described drill string correction data, wherein, described drill string correction data also comprise: the drilling tool corresponding with described true length data and described correction data is numbered;
Third reading delivery block, for reading long data more than the drilling tool that obtains in advance, wherein, more than described drilling tool, long data comprises the remaining long data of described drilling tool numbering and correspondence thereof;
4th acquisition module, for obtaining corresponding described remaining long data, described true length data and described correction data according to described drilling tool numbering;
Second correcting module, carries out correction for using described remaining long data to described true length data and described correction data and obtains revised true length data and revised correction data.
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