CN109356572B - Neutron density integration instrument - Google Patents
Neutron density integration instrument Download PDFInfo
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- CN109356572B CN109356572B CN201811295613.7A CN201811295613A CN109356572B CN 109356572 B CN109356572 B CN 109356572B CN 201811295613 A CN201811295613 A CN 201811295613A CN 109356572 B CN109356572 B CN 109356572B
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- density
- neutron
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
- E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The invention discloses a neutron density integrated instrument which comprises a pressure resistant pipe, a neutron short section, an ultrasonic ranging short section, a density short section and a synchronous pulse device, wherein the neutron short section, the ultrasonic ranging short section and the density short section are arranged in the pressure resistant pipe; the neutron pup joint comprises a neutron processor and is used for measuring formation porosity data; the ultrasonic ranging nipple comprises an ultrasonic processor and is used for measuring the distance from a measuring instrument to the well wall; the density pup joint comprises a density processor and an acceleration sensor, the density processor is used for measuring formation density and photoelectric coefficients, the acceleration sensor is used for dividing sectors on a tool face and determining the position pointed by a measuring probe, the synchronous pulse device comprises a synchronous pulse transmitter and a synchronous pulse line, and the synchronous pulse transmitter is used for transmitting a synchronous clock signal with fixed frequency f. The invention can reduce the load of the processor, does not need to respond to the interrupt quickly, ensures the implementation and saves the cost.
Description
Technical Field
The invention relates to the technical field of drilling, in particular to a neutron density integrated instrument.
Background
The new logging-while-drilling technology embodies the aim of producing oil and gas at the lowest cost, and a directional process in the drilling process is generated in order to more accurately evaluate the stratum. The requirements of the petroleum industry on measurement accuracy and reliability at present enable the application field of the logging-while-drilling technology to be continuously expanded, and the logging-while-drilling technology pushes the well drilling to a higher level. Aiming at the characteristics that most of oil fields in China are in the middle and later development stages at present, thin-layer and small-fault-block oil and gas reservoirs are developed, the logging-while-drilling technology can provide a main technical means for real-time geological guiding and stratum evaluation.
The complex lithologic stratum is an important exploration field of petroleum and natural gas in China, and detection aiming at lithologic characteristics of the complex lithologic stratum is a difficult research hotspot. The development of the drilling technology provides a new idea for the research of complex strata such as complex reservoirs, complex oil reservoirs and fault block oil reservoirs, improves the working efficiency and has extremely important significance for developing oil and gas reservoirs.
Conventional neutron and density appearance is provided with three measuring tool face, and in the instrument in-process of working, can increase the consumption, increase the cost to the in-process sampling data that data were carried out the transmission will be interrupted, can not guarantee data acquisition's continuity and rate of accuracy, corresponding increase procedure complexity.
Disclosure of Invention
In view of the above problems of the prior art, an object of the present invention is to provide a neutron density integrated instrument to solve the problems of large processor load and data synchronization.
In order to solve the technical problems, the specific technical scheme of the invention is as follows:
a neutron density integrated instrument comprises a pressure resistant pipe, a neutron pup joint, an ultrasonic ranging pup joint, a density pup joint and a synchronous pulse device, wherein the neutron pup joint, the ultrasonic ranging pup joint and the density pup joint are connected in sequence and are arranged in the pressure resistant pipe;
the neutron pup joint comprises a neutron processor and is used for measuring formation porosity data;
the ultrasonic ranging nipple comprises an ultrasonic processor and is used for measuring the distance from the measuring instrument to the well wall;
the density pup joint comprises a density processor and an acceleration sensor, wherein the density processor is used for measuring the formation density and the photoelectric coefficient, and the acceleration sensor is used for determining the position of a tool measuring surface and the position pointed by a measuring probe.
Further, the synchronization pulse device includes a synchronization pulse transmitter for transmitting a synchronization clock signal of a fixed frequency f and a synchronization pulse line for transmitting a pulse signal to the central processor and the ultrasonic processor.
Furthermore, the neutron pup joint, the ultrasonic ranging pup joint and the density pup joint are connected in parallel on the synchronous pulse line.
Further, neutron and densimeter still include power cord and communication line, neutron nipple joint, ultrasonic ranging nipple joint and density nipple joint connect gradually on the power cord, neutron nipple joint, ultrasonic ranging nipple joint and density nipple joint connect gradually on the communication line.
Further, the communication line is used for information transmission among the neutron nipple, the ultrasonic ranging nipple and the density nipple.
Further, neutron nipple joint also includes the accumulator, the accumulator is used for storing neutron nipple joint, ultrasonic ranging nipple joint and density nipple joint measured data.
Furthermore, the density nipple is also used for measuring well deviation and the rotating speed of the instrument, and the density nipple is communicated with other logging instruments through the power line.
Further, the central processor, the ultrasonic processor and the density processor are all provided with counters, and the counters are used for receiving pulse signals and ensuring that the received pulse signals are synchronously increased.
Further, the counters are of the same model and are hardware peripheral components of the central processor, the ultrasonic processor and the density processor.
Preferably, the pressure-resistant pipe of the neutron density integrated instrument is made of stainless steel.
By adopting the technical scheme, the neutron density integrated instrument has the following beneficial effects:
1. according to the neutron density integrated instrument, the synchronous pulse device is arranged to ensure that the measuring instrument can continuously run, the implementation is ensured, the cost is reduced, and the efficiency is improved.
2. According to the neutron density integrated instrument, the counter is arranged outside the neutron processor, the ultrasonic processor and the density processor, so that the running load of the processor is reduced, the processor does not need to respond to interrupt during running, and the complexity of a program is reduced.
3. The neutron density integrated instrument reduces the arrangement of acceleration sensors, only one synchronous pulse line is added, and the structure is optimized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiment or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a diagram of the assembly connections of a neutron density integrated instrument according to the present invention;
FIG. 2 is a synchronous pulse connection diagram of a neutron density integrated instrument according to the present invention.
Reference numbers in the figures: 1-pressure resisting pipe, 2-neutron short section, 3-ultrasonic ranging short section, 4-density short section, 5-synchronous pulse device, 6-power line, 7-communication line, 21-neutron processor, 22-storage, 31-ultrasonic processor, 41-density processor, 51-synchronous pulse emitter and 52-synchronous pulse line.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.
Example 1
According to the drawings of fig. 1 and fig. 2, the invention discloses a neutron density integrated instrument, which comprises a compression resistant pipe 1, a neutron short section 2, an ultrasonic ranging short section 3, a density short section 4 and a synchronous pulse device 5, wherein the neutron short section 2, the ultrasonic ranging short section 3 and the density short section 4 are connected in sequence and are arranged in the compression resistant pipe 1; the synchronous pulse device 5 is arranged inside the density short section; the neutron sub 2 comprises a neutron processor 21 for measuring formation porosity data; the ultrasonic ranging nipple 3 comprises an ultrasonic processor 31 and is used for measuring the distance from a measuring instrument to the well wall; the density short section 4 comprises a density processor 41 and an acceleration sensor 42, wherein the density processor 41 is used for measuring the formation density and photoelectric coefficient, and the acceleration sensor 42 is used for determining the position of a tool measuring surface and the position pointed by a measuring probe; the synchronization pulse device 5 comprises a synchronization pulse emitter 51 and a synchronization pulse line 52, the synchronization pulse emitter 51 is used for sending a synchronization clock signal with a fixed frequency f, and the synchronization pulse line 52 is used for transmitting a pulse signal to the central processor 21 and the ultrasonic processor. Neutron and densimeter still include power cord 6 and communication line 7, neutron nipple joint 2, ultrasonic ranging nipple joint 3 and density nipple joint 4 are parallelly connected on the power cord 6, neutron nipple joint 2, ultrasonic ranging nipple joint 3 and density nipple joint 4 are parallelly connected on the communication line 7. And the communication wire 7 is used for information transmission among the neutron short section 2, the ultrasonic ranging short section 3 and the density short section 4. Neutron nipple 2 also includes storage 22, storage 22 is used for storing neutron nipple 2, ultrasonic ranging nipple 3 and the data that density nipple 4 measured. The density nipple 4 is also used for measuring well deviation and instrument rotating speed, and the density nipple 4 is communicated with other logging instruments through the power line 6. The central processor 21, the ultrasonic processor 31 and the density processor 41 are each provided with a counter for receiving the pulse signal and ensuring that the received pulse signal is increased synchronously. The counters are of the same type and are all hardware peripheral components of the central processor 21, the ultrasonic processor 31 and the density processor 41.
According to the neutron density integrated instrument, the instrument rotates at a speed of 60-120 revolutions per minute along with a downhole drilling tool during working, the instrument divides measurement data into 8 sectors according to the tool face during rotation to form a neutron density measurement image, and each short section needs the tool face measurement data to divide the data into the sectors, so that a tool face measurement circuit cannot be placed in each short section, power consumption can be increased, cost can be increased, and program complexity can be increased. When the instrument turns to the 45-degree included angle, all the pups are informed to enter the next sector on the data line, so that it is not practical to directly transmit tool face switching information through the data line between the pups, because other data exist on the data line, the real-time performance is poor, sometimes the delay is dozens of milliseconds, and thus half of the sector may have already passed. And the tool face measuring circuit uses an acceleration sensor for measurement, and the data can obtain relatively accurate tool face information only by filtering due to the vibration of the downhole drilling, so that certain delay can occur when the instrument detects that the tool face exceeds 90 degrees, the measured data is difficult to record synchronously, and the method for triggering other short sections to switch sectors by using a digital signal line also has certain lag.
The synchronization pulse device 5 is therefore provided, the synchronization pulse device 5 sending a clock pulse signal of fixed frequency f, this signal being received simultaneously by the processors of the neutron sub 2, the ultrasonic ranging sub 3 and the density sub 4 and recorded on the three counters. And adding one to each time when the counter receives a pulse signal, so that the counter values of the processors of the neutron short section 2, the ultrasonic ranging short section 3 and the density short section 4 are the same at any time. Thus, counters of the neutron pup joint 2, the ultrasonic ranging pup joint 3 and the density pup joint 4 are synchronously increased, the counting value of each sampling point is synchronously recorded when data sampling is carried out on each pup joint, and the accurate corresponding time of each sampling can be determined through the counting value. Therefore, the problem of response interruption is solved by only adding one synchronous pulse line, most of the processing is background processing, and the cost is reduced.
Example 2
According to the drawings of fig. 1 and fig. 2, the invention discloses a neutron density integrated instrument, which comprises a compression resistant pipe 1, a neutron short section 2, an ultrasonic ranging short section 3, a density short section 4 and a synchronous pulse device 5, wherein the neutron short section 2, the ultrasonic ranging short section 3 and the density short section 4 are connected in sequence and are arranged in the compression resistant pipe 1; the synchronous pulse device 5 is arranged inside the density short section; the neutron sub 2 comprises a neutron processor 21 for measuring formation porosity data; the ultrasonic ranging nipple 3 comprises an ultrasonic processor 31 and is used for measuring the distance from the measuring instrument to the well wall; the density short section 4 comprises a density processor 41 and an acceleration sensor 42, wherein the density processor 41 is used for measuring the formation density and photoelectric coefficient, and the acceleration sensor 42 is used for determining the position of a tool measuring surface and the position pointed by a measuring probe; the synchronization pulse device 5 includes a synchronization pulse transmitter 51 and a synchronization pulse line 52, the synchronization pulse transmitter 51 is configured to transmit a synchronization clock signal of a fixed frequency f, and the synchronization pulse line 52 is configured to transmit a pulse signal to the central processor 21 and the ultrasonic processor. Neutron and densimeter still include power cord 6 and communication line 7, neutron nipple joint 2, ultrasonic ranging nipple joint 3 and density nipple joint 4 are parallelly connected on the power cord 6, neutron nipple joint 2, ultrasonic ranging nipple joint 3 and density nipple joint 4 are parallelly connected on communication line 7. And the communication line 7 is used for information transmission among the neutron pup joint 2, the ultrasonic ranging pup joint 3 and the density pup joint 4. Neutron nipple 2 also includes storage 22, storage 22 is used for storing neutron nipple 2, ultrasonic ranging nipple 3 and the data that density nipple 4 measured. The density nipple 4 is also used for measuring well deviation and the rotating speed of the instrument, and the density nipple 4 is communicated with other logging instruments through the power line 6. The central processor 21, the ultrasonic processor 31 and the density processor 41 are each provided with a counter for receiving the pulse signal and ensuring that the received pulse signal is increased synchronously. The counters are of the same type and are all hardware peripheral components of the central processor 21, the ultrasonic processor 31 and the density processor 41. The anti-pressure pipe of neutron and densimeter is stainless steel material.
According to the neutron density integrated instrument, the counters are of the same type and are hardware peripheral components of the neutron processor 21, the ultrasonic processor 31 and the density processor 41, after the program firmware sets the pins of the three processors, the pins are communicated with the counting unit inside the processors, the external TTL pulse signal triggers the value of the counting unit to be increased, one pulse is increased, and the process does not need the participation of the processors, in other words, the computing power of the processors is not consumed. The processor may read the count value of the count unit when needed. Therefore, if the processor does not have this function, the processor must immediately interrupt the code being executed to increment the counter and then return to the previously executed code after receiving the pulse, thereby increasing the processing load. Therefore, the counter of the peripheral device can reduce the load of the processor, reduce the power consumption of the processor and reduce the program complexity of the processor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (7)
1. A neutron density integrated instrument is characterized by comprising a compression resistant pipe (1), a neutron short section (2), an ultrasonic ranging short section (3), a density short section (4) and a synchronous pulse device (5), wherein the neutron short section (2), the ultrasonic ranging short section (3) and the density short section (4) are connected in sequence and are arranged inside the compression resistant pipe (1);
the neutron sub (2) comprises a neutron processor (21) for measuring formation porosity data; the ultrasonic ranging nipple (3) comprises an ultrasonic processor (31) and is used for measuring the distance from the measuring instrument to the well wall;
the density short section (4) comprises a density processor (41) and an acceleration sensor (42), wherein the density processor (41) is used for measuring the formation density and photoelectric coefficient, and the acceleration sensor (42) is used for determining the position of a tool measuring face and the position pointed by a measuring probe;
the synchronous pulse device (5) comprises a synchronous pulse emitter (51) and a synchronous pulse line (52), the synchronous pulse emitter (51) is arranged inside the density nipple (4) and used for sending a synchronous clock signal with a fixed frequency f, and the synchronous pulse line (52) is used for transmitting a pulse signal to the intermediate processor (21) and the ultrasonic processor;
the middle processor (21), the ultrasonic processor (31) and the density processor (41) are all provided with counters which are used for receiving pulse signals and ensuring that the received pulse signals are synchronously increased.
2. A neutron density integrated instrument according to claim 1, wherein the neutron sub (2), the ultrasonic ranging sub (3) and the density sub (4) are connected in parallel on the synchronization pulse line (52).
3. The integrated neutron density instrument according to claim 1, further comprising a power line (6) and a communication line (7), wherein the neutron pup joint (2), the ultrasonic ranging pup joint (3) and the density pup joint (4) are connected in parallel on the power line (6), and the neutron pup joint (2), the ultrasonic ranging pup joint (3) and the density pup joint (4) are connected in parallel on the communication line (7).
4. A neutron density integrated instrument according to claim 3, wherein the communication line (7) is used for information transmission among the neutron sub (2), the ultrasonic ranging sub (3) and the density sub (4).
5. A neutron density integrated instrument according to claim 1, wherein the neutron sub (2) also comprises a memory (22), and the memory (22) is used for storing data measured by the neutron sub (2), the ultrasonic ranging sub (3) and the density sub (4).
6. A neutron density integrated tool according to claim 3, wherein the density sub (4) is also used for measuring well deviation and tool rotation speed, and the density sub (4) is communicated with other logging tools through the power line (6).
7. A neutron density integration apparatus according to claim 1, wherein the counters are of the same type and are all a hardware peripheral component of the neutron processor (21), the ultrasonic processor (31) and the density processor (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811295613.7A CN109356572B (en) | 2018-11-01 | 2018-11-01 | Neutron density integration instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811295613.7A CN109356572B (en) | 2018-11-01 | 2018-11-01 | Neutron density integration instrument |
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| CN109356572A CN109356572A (en) | 2019-02-19 |
| CN109356572B true CN109356572B (en) | 2022-07-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100348834C (en) * | 2004-10-21 | 2007-11-14 | 山东科技大学 | Ultrasonic well logging instrument |
| US9618646B2 (en) * | 2012-02-21 | 2017-04-11 | Bakery Hughes Incorporated | Acoustic synchronization system, assembly, and method |
| CN102758611A (en) * | 2012-07-23 | 2012-10-31 | 吉艾科技（北京）股份公司 | Bamboo joint connecting method of logger string |
| CN204126640U (en) * | 2014-10-15 | 2015-01-28 | 北京捷威思特科技有限公司 | π storage type logging system |
| AU2014412808B2 (en) * | 2014-12-05 | 2018-02-01 | Halliburton Energy Services, Inc. | Downhole clock calibration apparatus, systems, and methods |
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