18-15M NXT Ram BOP 11003908-001

18-15M NXT Ram BOP 11003908-001 manual

BOP Configuration

The 18¾-15M NXT Double ram BOP is configured with an 18¾”-15,000 psi API studded top and flanged bottom, with six 3 1/16”-15,000 psi side outlets, and is equipped with doors utilizing pipe rams (various sizes), hydraulic ram operators with automatic locking, and XT™ door locking system (see Figure 2-1 on page 2-2).

Single, double and triple ram BOPs use ram blocks with rubber face seals to close around or shear and seal the drill string. When the rams are closed, the ram blocks slide on skid plates in the BOP cavity. Wellbore pressure pushes the ram block assemblies upward, and a seal is effected between the ram block rubber top seal and the seal seat insert. Ram block lateral side movement is guided by the cavity side pads (see Figure 2-2).

The UltraLock II (B) operators are used to close the ram assemblies on drill pipe and close off the wellbore pressure. The 14” UltraLock II (B) operators require a hydraulic pressure of 1,500 psi (103 bar) to accomplish sealing the wellbore pressure to the rated working pressure of the preventers. The 14” UltraLock II (B) operators are located on either side of the NXT body (see Figure 2-1 on page 2-2). When the rams are hydraulically closed, the

UltraLock II (B) operators automatically lock the rams in the closed position, and require opening hydraulic pressure to open them. The UltraLock II (B) operator is a multi-locking device, making it ideal for closing on variable ram assemblies.Although 1,500 psi (103 bar) hydraulic closing pressure is all that is required to seal off the wellbore to the rated working pressure of the preventers, the UltraLock II (B) hydraulic closing pressure, at the owner’s discretion, may be increased to a maximum of 3,000 psi (304 bar), if necessary

This locking system has been designed to increase the capabilities of Shaffer blowout preventers by providing a low maintenance and adjustment-free locking system while maintaining compatibility with all pipe ram assemblies that the BOP can accommodate.

The UltraLock II (B) locking system will lock on any pipe size within the range of the pipe ram assembly being used. Blowout preventers that are equipped with the UltraLock II (B) locking system are locked automatically in the closed position each time the piston assembly is closed. The preventer will also remain locked in the closed position, even if closing hydraulic pressure is lost or removed. Note that hydraulic opening pressure is required to unlock and reopen

the preventer.

Tianjin Dongrui Petroleum Machinery Can produce NXT Ram BOP and spare part

Upper Shear Ram Complete Assembly 20026243

Upper CVX Blade 20021845

 Upper CVX Rubber 20026217

6½” Retainer Screw 122864

Lower Shear Ram Complete Assembly 20026231

 Lower CVX Blade 20026179

Lower CVX Rubber 20026206

3½” to 5 ½”   NXT 20012089 20012092 126665

3½” to 5 7/8     NXT 20015911 20015868 20028655

3½” to 6 5/8     NXT 20024125 20024105  20092575

5” to 7” NXT 20012091 20012093 20017694

20011968 3½” NXT-D, U/T 20011825 171002 171034 –

20011973 4” NXT-D, U/T 20011829 171002 171035 –

20011977 4½” NXT-D, U/T 20011833 171002 171036 –

20011981 5” NXT-D, U/T 20011840 171002 171037 –

20011985 5½” NXT-D, U/T 20011844 171002 171038 –

20018599 57/8” NXT-D, U/T 20012363 171002 20017704 20017846

20011989 65/8” NXT-D, U/T 20011848 171002 171039 –

20011965 3½” NXT-D 20011825 126103 126182 126165

20011971 4” NXT-D 20011829 126103 126183 126166

20011975 4½” NXT-D 20011833 126103 126184 126167

20011979 5” NXT-D 20011840 126103 126185 126168

20011983 5½” NXT-D 20011844 126103 126186 126169

20012398 57/8 NXT-D 20012363 126103 20012387 20012399

20011987 65/8 NXT-D 20011848 126103 126187 126170

20011960 CSO NXT. U/T 20011716 171002 20010422 20010896

20011967 3½” NXT, U/T 20011823 171002 171034 –

20011972 4” NXT, U/T 20011828 171002 171035 –

20011976 4½” NXT, U/T 20011832 171002 171036 –

20011980 5” NXT, U/T 20011838 171002 171037 –

20011984 5½” NXT, U/T 20011843 171002 171038 –

20018599 57/8 NXT, U/T 20012363 171002 20017704

20011988 65/8 NXT, U/T 20011847 171002 171039 –

20011991 7” NXT, U/T 20011851 171002 171040 –

20011995 95/8 NXT, U/T 20011857 171002 170382 170378

20016070 10¾” NXT, U/T 20011863 171002 20010423 –

20016071 133/8 NXT, U/T 20011865 171002 20010488 20010898

20011959 CSO NXT 20011716 126103 126179 126162

20011962 23/8” NXT 20011821 126103 126180 126163

20011963 27/8” NXT 20011822 126103 126181 126164

20011964 3½” NXT 20011823 126103 126182 126165

20011970 4” NXT 20011828 126103 126183 126166

20011974 4½” NXT 20011832 126103 126184 126167

20011978 5” NXT 20011838 126103 126185 126168

20011982 5½” NXT 20011843 126103 126186 126169

20012397 57/8” NXT 20012362 126103 20012387 20012399

20011986 65/8” NXT 20011847 126103 126187 126170

20011990 7” NXT 20011851 126103 126188 126171

20011992 77/8” NXT 20011854 126103 126189 126172

20011993 85/8” NXT 20011855 126103 126190 126173

20011994 95/8” NXT 20011857 126103 126191 126174

20013695 97/8” NXT 20013689 126103 20013693 20013694

20011996 103/4” NXT 20011863 126103 126192 126175

20011997 113/4” NXT 20011864 126103 126193 126176

20011998 133/8” NXT 20011865 126103 126194 126177

20012651 5½” x 23/8” Dual Offset

20012463 5½” x 23/8” Left Hand 20012459 126103 20012464 –

20012591 5½” x 23/8” Right Hand 20012584 126103 20012464 –