Coiled Tubing Operations 0 Coiled Tubing Operations 1 / 30 A CT cleanout is being undertaken. the well is live throughout the job and returns are being taken through an adjustable choke. Where is the correct location for this choke? At the inlet to the reel. At the inlet to the separator. Where the fluid exits the coil/completion annulus. Where the fluid exits the completion/casing annulus. 2 / 30 What is the primary barrier element when installing coiled tubing tools in the riser? The stripper Xmas tree valves Shear/seal BOP SSSV 3 / 30 Which barrier element are the dual flapper valves in a coiled tubing string? Primary barrier element Secondary barrier element Shearing device Tertiary barrier 4 / 30 Which kind of barrier element is a shear/seal BOP (safety head)? Primary barrier element Secondary barrier element Shearing device Tertiary barrier 5 / 30 When rigged up on a live well as in the picture below, can the pipe rams be redressed with coil in the hole? Yes No It depends on the tybe of coil There is no way to know 6 / 30 Given the drawing below, match it to the correct description. Conventional stripper Side door stripper Radial stripper Annular Preventer 7 / 30 Given the drawing below, match it to the correct description. Conventional stripper Side door stripper Radial stripper Annular Preventer 8 / 30 Given the drawing below, match it to the correct description. Conventional stripper Side door stripper Radial stripper Conventional stripper 9 / 30 Of the these common types of stripper, which has the packer replaced through the top of the stripper? Standard stripper Side door stripper Horizontal stripper None 10 / 30 Which stripper type allows change out of the sealing rubber without pulling the coiled tubing out of the well? Standard stripper Side door stripper None Horizontal stripper 11 / 30 Which of the following rams would normally be closed so that a worn stripper element can be changed out with pipe in the hole? Blind ram Shear (cutter) ram Slip ram Shear/Seal (safety head) 12 / 30 What determines the maximum rated working pressure of a stripper? Manufacturer’s data for test pressure. Manufacturer’s data for working pressure. Type of stripper (standard, side door, radial). Pressure testing. 13 / 30 Which of the following rams would normally be closed so that a worn stripper element can be changed out with pipe in the hole? Shear (cutter) ram Blind ram Pipe (tubing) ram Shear/Seal (safety head) 14 / 30 What happens when the stripper is energised (packed)? Hydraulic pressure is applied to the upper bushing and compresses the packing down- wards. Hydraulic pressure is applied to the lower bushing and compresses the packing upwards. Wellhead pressure alone packs the stripper. Hydraulic pressure is applied to the wellhead pressure port and compresses the packing upwards. 15 / 30 The stripper is packed. If the wellhead pressure increases, does it assist the assembly to pack the stripper? Yes No It depends There is no way to know 16 / 30 Which ram has no sealing function? Blind ram Shear ram Pipe ram None 17 / 30 Which ram has no sealing function? Blind ram Pipe ram Slip ram None 18 / 30 Why is a shear/seal BOP (safety head) installed? It is used instead of a combi or quad When it is required to seal around the pipe To provide extra shear capability When it is required to cut pipe without sealing the well 19 / 30 Which of the following pressure control equipment items must be changed if the Coiled Tubing size is changed? Stripper guides Shear/seal rams Annular BOP Equalising valve 20 / 30 Which of the following pressure control equipment items must be changed if the Coiled Tubing size is changed? Slip rams Shear/seal rams Annular BOP Equalising valve 21 / 30 Which of the following pressure control equipment items must be changed if the Coiled Tubing size is changed? Blind rams Tubing rams Shear/seal rams Annular BOP 22 / 30 A ball has been dropped to open a circulating sub above the check valves and reverse cir- culation has been carried out. The well remains live. Which of the following statements is true? The reel valve will have to remain closed while pulling out of the hole to maintain proper coil internal well control. There will be no mechanical barriers at the bottom of the coil while pulling out of the hole. The coil can be pulled out of the hole in the normal way after successfully testing the check valves. Reverse circulation will have to be continued while pulling out of the hole to maintain proper well control. 23 / 30 Which of the following statements is the best description of a CT deployment system? On a semi-submersible, it supports the weight of the injector head, stripper and BOP. On a land job, it is the frame that supports the injector head. It is the equipment that is used to insert a long BHA through the injector head. It is the equipment that is used to run a long BHA into the well. 24 / 30 CT has been rigged up on a live well as in the drawing below. Lines from the pump are connected to the kill wing, the quad and the reel. The blind rams and the safety head must be tested from the correct direction. Through which connection should the tests be done? Reel Quad Kill wing 25 / 30 With coil in the hole, it is noticed that the connection between the quad and the stripper is leaking. Which secondary barrier element must be closed to allow the leak to be repaired? Blind ram Pipe ram UMV DHSV 26 / 30 While pulling out of the hole, a pinhole in the coiled tubing is noticed as the pipe is coming out of the injector head. What is the most likely correct first course of action to take in this situation? Continue pulling out but at an increased speed. Close the slip and pipe rams and review the situation. Run back in to place the leak below the stripper and review. Bleed the internal coil pressure to zero 27 / 30 Which of the following may be indications that the CT string has parted? Inside chain tension changes. SIWHP changes. Weight indicator shows a sudden loss. Stripper pressure changes. 28 / 30 Which of the following may be indications that the CT string has parted? Inside chain tension changes. SIWHP changes. Pump pressure changes. Stripper pressure changes. 29 / 30 When rigging up coiled tubing on the well, which of the following statements are true? Bleed the internal coil pressure to zero A quick union made up only hand tight may cause it to leak. BOP stems not screwed all the way in may cause the BOP to leak. A damaged O-ring or seal surface may cause a leak. 30 / 30 When rigging up coiled tubing on the well, which of the following statements are true? A damaged ring gasket groove may cause a leak. A quick union made up only hand tight may cause it to leak. BOP stems not screwed all the way in may cause the BOP to leak. Bleed the internal coil pressure to zero Your score is LinkedIn Facebook Twitter VKontakte
