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    • 3. 发明授权
    • Initiation of explosive devices
    • 启动爆炸装置
    • US06386108B1
    • 2002-05-14
    • US09401889
    • 1999-09-23
    • James E. BrooksNolan C. Lerche
    • James E. BrooksNolan C. Lerche
    • F42D102
    • F42D1/045E21B43/1185F42B3/121F42B3/124F42B3/13F42B3/198
    • A perforating gun or other downhole tool includes one or more explosive devices that are activable by corresponding one or more initiator devices, such as capacitor discharge units (CDUs). Each CDU includes an explosive foil initiator (EFI) or some other type of a high-energy bridge-type initiator, an energy source (e.g., a slapper capacitor), and a switch coupling the energy source and the EFI or other bridge-type initiator. An electrical cable is coupled to the CDUs for providing a voltage to energize the energy source in the CDUs to provide energy to each EFI. In response to activation of a trigger signal down the electrical cable, the switch is closed to couple the energy source to the EFI.
    • 穿孔枪或其它井下工具包括一个或多个可由相应的一个或多个起动器装置激活的爆炸装置,例如电容器放电单元(CDU)。 每个CDU包括爆炸性箔引发器(EFI)或某种其他类型的高能桥式起动器,能量源(例如,per器电容器)和将能量源与EFI或其他桥型 发起人 电缆耦合到CDU以提供电压以激励CDU中的能量源以向每个EFI提供能量。 响应于沿着电缆的触发信号的激活,开关闭合以将能量源耦合到EFI。
    • 5. 发明授权
    • Firing system for a perforating gun including an exploding foil
initiator and an outer housing for conducting wireline current and EFI
current
    • 用于射孔枪的发射系统,包括爆炸箔引发器和用于传导电缆电流和EFI电流的外壳
    • US5347929A
    • 1994-09-20
    • US116082
    • 1993-09-01
    • Nolan C. LercheClifford L. AseltineWallace E. Voreck, Jr.
    • Nolan C. LercheClifford L. AseltineWallace E. Voreck, Jr.
    • E21B43/1185F42D1/02F42D1/045F42D1/05F42C11/00
    • E21B43/1185F42D1/02F42D1/045F42D1/05
    • A firing head for a firing system adapted for use in a perforating gun includes an outer pressure bulkhead housing which simultaneously conducts two separate and independent currents: a wireline current from a wireline and a return current from an initiator embodied in the firing head. A fire set circuit provides a discharge pulse to the firing head, and a wireline conductor cable provides a wireline current to the fire set circuit. The firing head includes an outer pressure bulkhead housing adapted for conducting the wireline current from the wireline conductor cable to the fire set circuit, and an exploding foil initiator (EFI) responsive to the discharge pulse from the fire set circuit for initiating the detonation of a secondary explosive. The discharge pulse energizing the firing head passes through the exploding foil initiator (EFI) and emerges from the EFI as an EFI return current. As a result, the outer pressure bulkhead housing of the firing head conducts two separate and independent currents: the EFI return current from the EFI to a ground potential, and the wireline current from the wireline conductor cable to the fire set circuit.
    • 适用于射孔枪的击发系统的击发头包括外压隔板壳体,其同时传导两个独立和独立的电流:来自电缆的有线电流和来自实施在点火头中的起动器的返回电流。 火设置电路向击发头提供放电脉冲,并且电缆线电缆向火设置电路提供有线电流。 射击头包括外部压力舱壁壳体,其适用于将电线电流从电缆导体电缆传导到消防设置电路;以及响应于来自火灾设置电路的放电脉冲的爆炸箔启动器(EFI),用于启动 次级爆炸物 激发点火头的放电脉冲通过爆炸箔引发器(EFI),并从EFI中作为EFI返回电流出现。 结果,击发头的外部压力舱壁壳体传导两个独立且独立的电流:EFI从EFI返回到地电位,并将电缆电流从电缆导体电缆传导到消防设备电路。
    • 7. 发明授权
    • Apparatus and methods for controlling and communicating with downwhole devices
    • 用于控制和下水道装置通信的装置和方法
    • US08576090B2
    • 2013-11-05
    • US12221611
    • 2008-08-05
    • Nolan C. LercheJames E. Brooks
    • Nolan C. LercheJames E. Brooks
    • E21B43/1185
    • E21B43/1185E21B41/0021E21B43/119F42D1/055G01V3/18
    • Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Also provided are apparatus and methods for controlling and communicating with one or more perforating guns, release devices, and explosive devices in a string to be lowered into a wellbore. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, each state machine returning a signal verifying switch status to the surface. Control and power functions are accomplished with voltage of different polarities for safety.
    • 用于控制和与井下工具串中的一个或多个工具进行通信的装置和方法,包括拖拉机,辅助拖拉机工具,测井工具,安全子系统,释放机构,包含用于监测井下状况的传感器的单元,设置工具 和射孔枪。 还提供了用于控制和连通一个或多个穿孔枪,释放装置和串联中的爆炸装置以降低到井眼中的装置和方法。 控制和通信是通过将表面上的信号发送到工具上的控制单元中的控制开关,用于安全的冗余开关,到各个控制单元中的状态机,每个状态机将信号验证开关状态返回到表面。 控制和功率功能是为了安全起见,以不同极性的电压完成。
    • 8. 发明申请
    • Apparatus and Methods for Controlling and Communicating with Downhole Devices
    • 用于控制和通信井下设备的装置和方法
    • US20110066378A1
    • 2011-03-17
    • US12934701
    • 2009-08-05
    • Nolan C. LercheJames E. Brooks
    • Nolan C. LercheJames E. Brooks
    • G06F19/00G01V1/40
    • E21B47/12E21B43/116E21B43/11857E21B44/00E21B47/024E21B47/122E21B2023/008
    • Apparatus and methods for controlling and communicating with one or more tools in a downhole tool string including a tractor, an auxiliary tractor tool, a logging tool, a safety sub, a release mechanism, a unit containing sensors for monitoring downhole conditions, a setting tool, and a perforating gun. Also provided are apparatus and methods for controlling and communicating with one or more perforating guns, release devices, and explosive devices in a string to be lowered into a wellbore. Control and communication are accomplished by sending signals from the surface to control switches in the control units on the tool, with redundant switches for safety, to state machines in the respective control units, each state machine returning a signal verifying switch status to the surface. Control and power functions are accomplished with voltage of different polarities for safety.
    • 用于控制和与井下工具串中的一个或多个工具进行通信的装置和方法,包括拖拉机,辅助拖拉机工具,测井工具,安全子系统,释放机构,包含用于监测井下状况的传感器的单元,设置工具 和射孔枪。 还提供了用于控制和连通一个或多个穿孔枪,释放装置和串联中的爆炸装置以降低到井眼中的装置和方法。 控制和通信是通过将表面上的信号发送到工具上的控制单元中的控制开关,用于安全的冗余开关,到各个控制单元中的状态机,每个状态机将信号验证开关状态返回到表面。 控制和功率功能是为了安全起见,以不同极性的电压完成。