公开(公告)号：US5200894A

公开(公告)日：1993-04-06

申请号：US552529

申请日：1990-07-16

申请人： James N. McCoy ,  Augusto L. Podio ,  Kenneth L. Huddleston

发明人： James N. McCoy ,  Augusto L. Podio ,  Kenneth L. Huddleston

IPC分类号： E21B47/04 ,  G01F23/296 ,  G01V1/137

CPC分类号： G01F23/2962 ,  E21B47/042 ,  G01V1/137

摘要： An echo sounding system includes an acoustic gun which is mounted to the wellhead of a borehole. The acoustic gun produces an acoustic pulse which is transmitted down the borehole. A tubing string is installed in the borehole and it has substantially evenly spaced collars. Fluid is pumped from the borehole, or well, by use of a reciprocating pump driven by a pump rod extending to the surface. The acoustic pulse produces reflections when it strikes the tubing collars and the surface of the fluid. A microphone detects the reflections to produce a return signal. This signal is digitized and stored. The digitized signal is processed to detect the rate of the collar reflections and the stored signal is narrowband filtered with a passband filter centered at the rate of receipt of the collars. Each cycle of the narrowband filtered signal corresponds to one collar reflection. In this signal, each cycle is counted, and extrapolation used when necessary to produce a collar count extending from the surface to the liquid surface. This is multiplied by the average joint length to produce the depth to the liquid surface. The system further detects the liquid level and displays it as a marker on the data signal. An operator can use the automatically determined marker or move it to another position. Finally, the operator is provided with optimum operating parameters for achieving maximum production from the well.

摘要翻译： 回波探测系统包括安装在钻孔井口的声枪。 声枪产生在井眼下传播的声脉冲。 管柱安装在钻孔中，并且具有基本上均匀间隔的套环。 流体通过使用由延伸到表面的泵杆驱动的往复泵从井眼或井中泵送。 当声脉冲撞击油管套和流体表面时，声脉冲产生反射。 麦克风检测反射以产生返回信号。 该信号被数字化并存储。 数字化信号被处理以检测套环反射的速率，并且存储的信号被以通过套圈的接收速率为中心的通带滤波器进行窄带滤波。 窄带滤波信号的每个周期对应于一个轴环反射。 在该信号中，对每个周期进行计数，并且在必要时进行外推以产生从表面延伸到液体表面的套圈数。 这被乘以平均关节长度以产生到液体表面的深度。 该系统进一步检测液面并将其显示为数据信号上的标记。 操作员可以使用自动确定的标记或将其移动到另一位置。 最后，为操作员提供最佳的操作参数，以实现井的最大生产。

公开(公告)号：US4637463A

公开(公告)日：1987-01-20

申请号：US636992

申请日：1984-08-02

申请人： James N. McCoy

发明人： James N. McCoy

IPC分类号： E21B34/02 ,  E21B47/04 ,  E21B47/10 ,  G01F23/296 ,  G01V1/137

CPC分类号： G01F23/2962 ,  E21B34/02 ,  E21B47/042 ,  E21B47/101 ,  G01V1/137 ,  Y10S367/908

摘要： An echo ranging gun (10) is disclosed which is useable with high pressure gas wells having gas pressure exceeding 15,000 psi. The gun (10) is connected to the needle valve (30) typically encountered on a well having high pressure. The needle valve can have a diameter as small as approximately 1/8 inch. The gun (10) has a passage (38) which is exposed to the gas in the wellbore (14) and a volume chamber (46). A poppet valve (56) is movable between open and closed positions in the volume chamber by rotating a wing handle (88) connected to a head (78) within the volume chamber (46) which has a ramp (80) to contact the poppet valve (56) to move the valve to the closed position. A bleed valve (112) is used to bleed the wellbore gas from the volume chamber to create a predetermined pressure differential between the passage (38) and volume chamber (46). Further rotation of the wing handle (88) causes the poppet valve (56) to be released from the ramp at a down step (86). The pressure differential causes the poppet valve (56) to rapidly move to the open position and the gas flow into the volume chamber (46) generates an acoustic event which passes through the needle valve (30) reflects off various objects down the borehole and returns through the needle valve (30) to be sensed by a microphone (144).

摘要翻译： 公开了一种回波测距枪（10），其可用于气压超过15,000psi的高压气井。 枪（10）连接到通常遇到在高压井上的针阀（30）。 针阀可以具有小至约1/8英寸的直径。 枪（10）具有暴露于井筒（14）中的气体和容积室（46）的通道（38）。 提升阀（56）可以通过旋转连接到容积室（46）内的头部（78）的翼把手（88）而旋转在容积室中的打开位置和关闭位置之间，其具有斜坡（80）以接触提升阀 阀（56）将阀移动到关闭位置。 泄放阀（112）用于从容积室排出井筒气体，以在通道（38）和容积室（46）之间产生预定的压力差。 翼把手（88）的进一步旋转导致提升阀（56）在下降步骤（86）从斜坡释放。 压力差导致提升阀56快速移动到打开位置，并且进入容积室46的气流产生声学事件，其通过针阀30反射出井下的各种物体并返回 通过针阀30被麦克风（144）感测。