SU956772A1

SU956772A1 - Device for sweeping-up wells

Info

Publication number: SU956772A1
Application number: SU813244794A
Authority: SU
Inventors: Павел Федотович Пузырев; Рема Элисович Чигиринский; Сергей Иванович Широченский
Priority date: 1981-02-04
Filing date: 1981-02-04
Publication date: 1982-09-07

Description

Изобретение относится к подземному хранению, конкретно к геофизическим измерениям в скважинах, соединяющих подземную емкость газонефтехранилищ'а с поверхностью., и может быть использовано при промысловых работах в газовой и нефтедобывающей промышленности.The invention relates to underground storage, specifically to geophysical measurements in wells, connecting the underground capacity of the gas and oil storage tanks with the surface., And can be used in field work in the gas and oil industry.

_;Известно устройство, используемое для' определения положения забоя в скважинах при геофизических измерениях, включающее скважинный снаряд из нескольких датчиков и груз. Устройство .опускают в скважину с поверхности посредством сматывания с лебедки каротажного кабеля, к которому оно подключено. При перемещении устройства по скважине регистрируют изменения силы тока в цепях соответствующих датчиков. Во время касания устройством забоя скважины перемещение прекращается и на диаграммах фиксируется постоянная сила тока, что и служит признаком достижения устройством забоя [1] . _; A device is known that is used to determine the position of the bottom hole in wells during geophysical measurements, including a downhole projectile of several sensors and a load. The device. Is lowered into the well from the surface by winding the logging cable to which it is connected from the winch. When the device moves along the well, changes in current strength are recorded in the circuits of the corresponding sensors. When the bottomhole device touches the well, the movement stops and a constant current is fixed on the diagrams, which serves as a sign of the bottomhole device reaching [1].

Однако при искривлении колонны рабочий труб, по которой производят спуск устройства, может произойти его прихват и фиксирование силы тока в цепи датчиков выше отметки забоя скважины.However, when the column of the working pipe is curved, along which the device is lowered, it may seize and fix the current strength in the sensor circuit above the bottom hole mark.

Для избежания ошибки в определении отметки положения забоя скважины, в практике промыслово-геофизических работ применяют специальные датчики дна.To avoid errors in determining the mark of the bottom hole position, special bottom sensors are used in the practice of field geophysical work.

Известно также устройство для шаблонирования скважины, содержащее скважинный снаряд, срстоящий из корпуса, внутри которого установлен шток, электромагнитный контакт, включающий магнит и датчик, измерительную цепь [2] .There is also known a device for patterning a well, comprising a downhole projectile, consisting of a housing inside which a rod is installed, an electromagnetic contact, including a magnet and a sensor, a measuring circuit [2].

Так как скважинный снаряд - шаблон опускают на каротажном кабеле, то длина сматывания кабеля с лебедки на момент поступления сигнала соответствует глубине положения забоя или дна подземной камеры.Since the downhole projectile-template is lowered on the wireline cable, the length of the cable winding from the winch at the time the signal arrives corresponds to the depth of the bottom position or bottom of the underground chamber.

Однако такая конструкция устройства характеризуется недостаточно высокой информативностью, так как устройство позволяет установить только глубину дна подземной камеры, но не позволяет охарактеризовать его состояние, что важно в технологическом отношении, кроме того, не определяется глубина прихвата скважинного снаряда/ т.е. место искривления колонны рабочих труб, по которой производят спуск скважинного снаряда, и как следствие может привести к потере дорогостоящей звуколокационной аппаратуры.However, this design of the device is characterized by insufficiently high information content, since the device allows you to set only the depth of the bottom of the underground chamber, but does not allow to characterize its state, which is important from a technological point of view, in addition, the sticking depth of the borehole is not determined / i.e. the place of curvature of the working pipe string, along which the downhole shell is lowered, and as a result may lead to the loss of expensive sonar equipment.

Цель изобретения - повышение точности определения глубины прихвата скважинного снаряда.The purpose of the invention is to increase the accuracy of determining the depth of sticking of a downhole projectile.

Указанная цель достигается тем, что в устройстве корпус выполнен в виде двух подвижных относительно друг друга частей, а устройство снабжено дополнительным электромаг(нитным контактом, магнит которого размещен в одной части корпуса, а датчик - в другойThis goal is achieved by the fact that in the device the housing is made in the form of two parts moving relative to each other, and the device is equipped with an additional electromagnet (a nit contact, the magnet of which is located in one part of the housing, and the sensor in the other

На фиг. 1 изображено предлагаемое устройство, общий вид; на фиг. фиг. 2 - особенности работы устройства и прототипа в случае прихвата устройства в искривленной колонне рабочих труб? на фиг. 3 -.схема положения устройства при оценке состояния дна подземной камеры.In FIG. 1 shows the proposed device, a General view; in FIG. FIG. 2 - features of the operation of the device and prototype in case of sticking the device in a curved column of working pipes? in FIG. 3-diagram of the position of the device when assessing the state of the bottom of the underground chamber.

Устройство для шаблонирования скважины содержит скважинный снаряд, имеющий верхний корпус 1, в котором размещен электромагнитный контакт, включающий датчик 2, замыкающийся при перемещении штока 3, с укрепленным на штоке магнитом 4 и дополнительным датчиком 5, замыкающимся при перемещении нижнего корпуса 6 с укрепленным на нем дополнительным магнитом 7.A device for patterning a well comprises a borehole projectile having an upper body 1 in which an electromagnetic contact is placed, including a sensor 2 that closes when the rod 3 is moved, with a magnet 4 mounted on the rod and an additional sensor 5 that closes when the lower case 6 is moved and mounted on it additional magnet 7.

Устройство .работает следующим образом.The device. Works as follows.

Скважинный снаряд на каротажном кабеле опускают в скважину,. В случае свободного спуска предлагаемого устройства нижний корпус 6 под действием своего веса находится в крайнем нижнем положении. Соответственно дополнительный магнит 7 удален, от дополнительного датчика 5, контакт которого в этом случае разомкнут, следовательно, разомкнута и. первая измерительная цепь, в которую входят первая жила каротажного кабеля 'контакт дополнительного датчика броня каротажного кабеля. В аналогичном состоянии находится и вторая измерительная цепь: вторая жила каротажного кабеля - контакт основного датчика - броня каротажного кабеля.The downhole tool on the wireline is lowered into the well. In the case of free descent of the proposed device, the lower housing 6 under the action of its weight is in its lowest position. Accordingly, the additional magnet 7 is removed from the additional sensor 5, the contact of which in this case is open, therefore, open and. the first measuring circuit, which includes the first core of the wireline 'contact of the additional sensor armor of the wireline. The second measuring circuit is in a similar state: the second core of the logging cable - the contact of the main sensor - the armor of the logging cable.

Так как шток 3 под действием своего веса находится в крайнем нижнем положении, основной магнит 4 удален от основного датчика 2. Таким образом, о свободном прохождении скважинного снаряда по скважине свидетел^твует отсутствие силы тока в цепях обоих датчиков.Since the rod 3 is in its lowest position due to its weight, the main magnet 4 is removed from the main sensor 2. Thus, the absence of current flow in the circuits of both sensors testifies to the free passage of the borehole projectile through the borehole.

При искривлении колонны рабочих труб, препятствующих свободному прохождению скважинного снаряда, нижний корпус 6 (фиг.2 положение А) упирается в стенку колонны и пере мещается относительно верхней части корпуса 1 устройства (фиг.2 положение Ь). При этом дополнительный магнит 1 приближается к дополнительному датчику 5 и замыкает его электроконтакт. В то время шток 3, не опирающийся на какую-либо преграду, остается в крайнем нижнем положении контакт основного датчика 2 разомкнут, и поэтому также разомкнута и цепь основного датчика.When the column of working pipes is bent, preventing the free passage of the downhole tool, the lower case 6 (Fig. 2, position A) abuts against the wall of the column and moves relative to the upper part of the device casing 1 (Fig. 2, position b). In this case, the additional magnet 1 approaches the additional sensor 5 and closes its electrical contact. At that time, the rod 3, which does not rest on any obstacle, remains in the lowermost position, the contact of the main sensor 2 is open, and therefore the circuit of the main sensor is also open.

Таким образом, прихват скважинного снаряда в колонне определяют по замыканию измерительной цепи дополнительного датчика 5, сопровождаемого разрывом' цепи основного датчика 2, а глубина прихвата определяется по количеству смотанного с .лебедки каротажного кабеля на момент замыкания цепи дополнительного дат’чика 5. При работе с известным устройством каких-либо сигналов из скважины на поверхность не поступает, так как единственная измерительная цепь оказывается разомкнутой (фиг.2 положение В), как и в случае свободного прохождения снаряда.Thus, the downhole tool sticking in the string is determined by the closure of the measuring circuit of the additional sensor 5, followed by a break in the main sensor circuit 2, and the sticking depth is determined by the number of logging cable wound from the winch at the time of closing the additional sensor circuit 5. When working with The known device does not receive any signals from the well to the surface, since the only measuring circuit is open (Figure 2, position B), as in the case of free passage of the projectile.

Если колонна рабочих труб не имеет существенных искривлений, снаряд свободно проходит в подземную камеру и достигает ее дйа.If the column of working pipes does not have significant distortions, the projectile freely passes into the underground chamber and reaches its dy.

Описываемое устройство для шаблонирования скважины с двойным корпусом, позволяет оценить и состояние дна подземной камеры. В случае плотного дна (фиг.З положение А ) в момент касания дна камеры шток 3 скважинного снаряда перемещается внутри его корпуса и замыкает контакт основного датчика 2, в цепи которого появляется ток. При дальнейшем спуске скважинный снаряд опрокидывается без перемещения нижнего корпуса 6 относительно верхнего корпуса 1, и измерительная цепь дополнительного датчика 5 размыкается. В случае вязкого дна подземной камеры (фиг.З положение б) сначала перемещается шток 3, замыкается контакт датчика 2, а при дальнейшем спуске снаряда из-за погружения нижнего корпуса 6 в вязкий грунт происходит его перемещение относительно верхнего корпуса 1 и замыкание контакта дополнительного датчика 5. Появление силы тока в цепи датчика 2 говорит о гуготном дне подземной камеры, а появление тока в цепях обоих датчиков говорит о вязком дне подземной камеры.The described device for patterning a well with a double casing allows us to evaluate the condition of the bottom of the underground chamber. In the case of a dense bottom (Fig. 3, position A), when the bottom of the camera touches the rod 3 of the downhole projectile moves inside its body and closes the contact of the main sensor 2, in the circuit of which a current appears. With further descent, the wellbore rolls over without moving the lower body 6 relative to the upper body 1, and the measuring circuit of the additional sensor 5 opens. In the case of the viscous bottom of the underground chamber (FIG. 3, position b), the rod 3 first moves, the contact of the sensor 2 closes, and when the shell is further lowered due to immersion of the lower body 6 in viscous soil, it moves relative to the upper body 1 and the contact of the additional sensor closes 5. The appearance of current in the circuit of the sensor 2 indicates the bottom of the underground chamber, and the appearance of current in the chains of both sensors indicates the viscous bottom of the underground chamber.

Практическое внедрение конструкции описываемого устройства обеспечивает сохранность дорогостоящей эвуколокационной аппаратуры; позволяет избежать аварийных ситуаций в. случае искривления рабочей колонны) дает возможность получать характеристики состояния дна подземной камеры/ уменьшает простой на ликвида цию аварий при производстве геофизических измерений на скважинах.Practical implementation of the design of the described device ensures the safety of expensive evacuation equipment; avoids emergency c. in case of curvature of the working string) makes it possible to obtain the characteristics of the state of the bottom of the underground chamber / reduces downtime for the elimination of accidents during geophysical measurements in wells.

Технико-экономическая эффективность предлагаемой конструкции устройства выражается в обеспечении сохранности звуколокационной аппаратуры, сокращении простоев и средств на ликвидацию аварий при производстве геофизических измерений на скважинах и получении расчетной экономии только одного комплекта аппаратуры 53 тыс.руб./год.The technical and economic efficiency of the proposed device design is expressed in ensuring the safety of sonar equipment, reducing downtime and means to eliminate accidents during the production of geophysical measurements in wells and obtaining estimated savings of only one set of equipment 53 thousand rubles / year.

Claims

The invention relates to underground storage, specifically to geophysical measurements in wells connecting the underground reservoir of a gas and oil storage with the surface, and can be used in field operations in the gas and oil industry. A device used to determine the position of a bottom hole in a well during geophysical measurements is known, including a borehole with several sensors and a load. The device is allowed into the well from the surface by winding the carot cable to which it is connected. As the device moves along the well, changes in the current intensity in the respective sensor circuits are recorded. When the downhole device touches, the movement is stopped. And in the diagrams, a constant current is recorded, which is a sign of the downstream device l. However, if the working column is bent: 4 pipes, through which the device is lowered, it can be caught and the current is fixed in the sensor circuit above the downhole level. To avoid errors in determining the position of the bottom hole, special bottom sensors are used in the practice of geophysical surveys. It is also known a device for patterning a borehole, containing a borehole projectile, spacing from a housing inside which a rod is installed, an electromagnetic contact including a magnet and a sensor, measuring circuit 2. Since the borehole d-template is lowered onto the logging cable, the length of the cable winder from the winch at the time of the signal arrival corresponds to the depth of the bottom or bottom of the underground chamber. However, such a device design is not sufficiently informative, since the device allows you to set only the depth of the bottom of the underground chamber, but does not characterize its condition, which is important in terms of technology, moreover, the depth of sticking of the wellbore, t is not determined. e. the place of curvature of the column of working pipes, through which the wellbore is lowered, and as a result, may result in the loss of expensive sonar equipment. The purpose of the invention is to improve the accuracy of determining the depth of sticking of the wellbore. This goal is achieved by the fact that in the device the case is made in the form of two parts moving relative to each other, and the device is equipped with an additional electro magnetic contact, the magnet of which is placed in one part of the case, and the sensor in the other. FIG. 1 shows the proposed device, a general view; in fig. FIG. 2 - features of the operation of the device and the prototype in the case of sticking of the device in a curved column of working pipes in FIG. Fig. 3 is a diagram of the field position of the device when assessing the condition of the bottom of the underground chamber. The device for patterning a well contains a wellbore having an upper body 1, in which an electromagnetic contact is placed, including a sensor 2, which closes when the rod 3 moves, with a magnet 4 mounted on the rod and an additional sensor 5 that closes when the lower body 6 moves It has an additional magnet 7. Device. It works as follows. A wellbore d. On the logging cable is lowered into the well. In the case of a free descent of the proposed device, the lower body, under the action of its weight, is in its lowermost position. Correspondingly, the additional magnet 7 is removed, from the additional sensor 5, the contact of which in this case is open, therefore open and. The first measuring circuit, to which the input of the first logging cable is the contact of the additional sensor of the armor cable, In the analogous state there is also the second one from the measuring circuit of the second core cable - the contact of the main sensor - the logging cable Since rod 3 is under the action of its own weight in the lowest position, the main magnet 4 is removed from the main sensor 2. Thus, the free passage of the wellbore through the well is indicated by the absence of current in the circuits of both sensors. With the curvature of the column of working pipes, which impede the free passage of the borehole projectile, the lower case b of Fig. 2, position A) abuts against the wall of the column and moves relative to the upper part of the device case 1 (Fig. 2, position b). In this case, the additional magnet 1 approaches the additional sensor 5 and closes its electrical contact. At that time, the rod 3, which is not supported by any obstacle, remains in its lowest position, the contact of the main sensor 2 is open, and therefore the main sensor circuit is also open. Thus, the penetration of the wellbore in the string is determined by the closure of the measuring circuit of the additional sensor 5, followed by breaking the main sensor to 2, and the sticking depth is determined by the number of logging cable reeled from the winch at the time of closing the circuit of the additional sensor 5. During operation with a known device, no signals come from the well to the surface, since the only measuring circuit is open (Fig. 2, position B}, as in the case of free passage Yes. If the column of working pipes does not have significant distortions, the projectile freely passes into the subterranean chamber and reaches its bottom. The described device for a double-body well template is able to estimate the condition of the bottom of the subterranean chamber. In the case of a dense bottom (FIG. A) at the moment of touching the bottom of the chamber, the rod 3 of the downhole projectile moves inside its body and closes the contact of the main sensor 2, in the circuit of which current appears. Upon further descent, the wellbore tilts without moving the lower body 6 relative to the upper body 1, and the measuring circuit of the additional sensor 5 opens. In the case of the viscous bottom of the underground chamber (FIG. 3), the J position b first moves the rod 3, closes the contact of the sensor 2, and with further descent of the projectile due to immersion of the lower body 6, it moves to the viscous soil relative to the upper body 1 and closes the contact of the additional sensor 5. The appearance of the current in the circuit of sensor 2 indicates the fuse bottom of the underground chamber, and the appearance of current in the circuits of both sensors indicates the viscous bottom of the underground chamber. Practical implementation of the design of the described device ensures safety it allows avoiding emergency situations in the case of curvature of the working column) makes it possible to obtain the characteristics of the state of the bottom of the underground chamber, reduces the downtime for the elimination of accidents during the production of geophysical measurements of wells. Technical and economic efficiency of the proposed design of the device is expressed in ensuring the safety of sonar equipment, reducing downtime and means to eliminate accidents during the production of geophysical measurements at wells and obtaining the estimated savings of only one set of equipment 53 thousand rubles / year. The invention The device for patterning wells, which contains a borehole projectile consisting of a housing inside which a rod is installed, an electrically magnetic contact including a magnet and a sensor, a measuring circuit characterized in that, in order to improve the accuracy of determining the depth of the end of the borehole projectile, the housing made in the form of two moving parts relative to each other, and the device is equipped with an additional electromagnetic contact, the magnet of which is placed in one part of the body, and the sensor in the other. Sources of information taken into account in the examination 1. Dakhnov V, N. Geophysics. M., Gostoptehizdat, p..59.

2.Puzyrev P.F. and others. Experience of using these indicators when sonar underground tanks. - Abstract collection Automation, telemechanization and communication in the gas industry. M., VNIIgazprom, 1975, No. 9, p. 15-20.