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Macaroni string

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Proceedings Papers

Paper presented at the SPE Offshore Europe, September 8–11, 1987
Paper Number: SPE-16536-MS
.... Abstract Gas lift is a widespread method of artificial lift. However, on wells where there is no provision for Side Pocket Mandrels one way to avoid a heavy work over, is to run a macaroni string inside the existing tubing ; gas can be injected via the macaroni and the lifted fluid flowed through...
Journal Articles
J Pet Technol 21 (04): 505–514.
Paper Number: SPE-2176-PA
Published: 01 April 1969
... sulfate scale have confirmed this mechanism. The types of polyphosphate mentioned can be applied as concentrated aqueous solutions either squeezed into the formation, lubricated down the annulus or injected via macaroni string. Several squeeze jobs with polyphosphate solutions have been carried out...
Proceedings Papers

Paper presented at the SPE Rocky Mountain Joint Regional Meeting, May 27–28, 1963
Paper Number: SPE-592-MS
... on a macaroni string in the well tubing or casing, and the "free" system, where the pump is circulated to bottom in a parallel or concentric U-tube arrangement [Fig. 2]. With these basic systems we have the potential of meeting the needs of a wide variety of pumping requirements. LARGE VOLUME When...
Proceedings Papers

Paper presented at the CORROSION 2007, March 11–15, 2007
Paper Number: NACE-07062
... process problems such as corrosion, microbial activity and mineral scale deposition. The traditional options for controlling mineral scale in production wells are continuous injection of scale inhibitors down a capillary line (macaroni string), which is commonly deployed in wells where calcium carbonate...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference, March 5–8, 1985
Paper Number: SPE-13486-MS
... and a combination macaroni string. (Fig. 5) To be able to circulate mud through the macaroni string 20.000 psi pumping equipment had to be brought to the well site. The first bridge was drilled out at about 2.950 ft. Later a leak was found in the 5" drill string and when we tried to run the intact 5" string we...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 26–29, 1982
Paper Number: SPE-11039-MS
... these changes, the corrected maximum effici- ency should be close to 35%. The Fluid Rod Production System is composed of two parts. One, a surface unit that supplies fluid power and controls the events and two, a bottomhole system. The surface unit is connected to the bottomhole system by a macaroni string...
Journal Articles
J Pet Technol 12 (12): 22–24.
Paper Number: SPE-1239-G
Published: 01 December 1959
... artificial lift for a number of years. This problem was approached from a number of ways- by (1) singularly completing with permanent completion equipment to enable later selection of production interval via wireline, (2) crossing the upper zone over to the tubing and gas lifting with a macaroni string...
Journal Articles
J Pet Technol 10 (12): 12–20.
Paper Number: SPE-1170-G
Published: 01 December 1958
... pumped alter- nately through tubing by use of a valve positioned in tub- ing above packer that is opened or closed by rotating the tubing. 2. Gas Lift 2. Run concentric or paralIel macaroni string (small di- ameter pipe) for hydraulic lift or single point gas injec- tion to lift lower zone. C. Advantages...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 23–April 1, 2021
Paper Number: IPTC-21345-MS
... Abstract This is a case study to establish the positive result of an artificial lift application of the jet pump (JP) system using the coiled tubing (CT) and the macaroni tubing (MT). It is applied to the monobore completions for the slim-hole production wells on BURAPA-A oil field, onshore...
Journal Articles
J Pet Technol 18 (09): 1031–1040.
Paper Number: SPE-1444-PA
Published: 01 September 1966
... are defined as remedial operations which can be conducted without physically disturbing the original downhole mechanical condition of the well. This type of workover involves the use of concentric macaroni tubing strings and/or wireline methods and/or treatments (other than installation of gas lift valves...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Conference and Exhibition, November 11–14, 2012
Paper Number: SPE-162190-MS
... * Rigless installation of a macaroni string on the inside of production tubing through special sssv A technical and cost analysis was used to compare the different options and come up with the most suitable solution to mitigate both asphaltene deposition and corrosion. Option 1 is not feasible since...
Proceedings Papers

Paper presented at the International Meeting on Petroleum Engineering, November 14–17, 1995
Paper Number: SPE-29927-MS
... packer was set at the required depth. 2 SMALL DIAMETER PACKERS CAN SOLVE BIG WELL CONTROL PROBLEMS SPE 29927 2) Italy '94- Hp/Ht ultradeep·well 6145 m., safe abandoning. A small 1.69" OD inflatable permanent bridge plug conveyed with tripping technique with 1.66" macaroni string and snubbing unit...
Journal Articles
J Pet Technol 6 (05): 15–17.
Paper Number: SPE-429-G
Published: 01 May 1954
...-in. x % -in. clamps are standard equipment). 3. A slip-type tubing head, that was designed to sus- pend two strings of tubing and pack off the third or "macaroni" string. Other equipment necessary was: (a) a complete string of N-80 tubing used as the carrying string for both the J-55 2-in. tubing...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2006
Paper Number: OTC-17998-MS
... macaroni string, heating processes and chemicals treatments which are expensive and are logistically more difficult to perform. The use of non- cryogenic Nitrogen to remove paraffins and hydrate deposits from the well is applicable when the nature of the paraffin wax or hydrates is soluble with the flow...
Journal Articles
J Pet Technol 74 (06): 38–47.
Paper Number: SPE-0622-0038-JPT
Published: 01 June 2022
... lift) that was applied on a well-by-well basis as needed and categorized as gas-lift packoff, siphon string gas lift, and gas-lift macaroni (Fig. 6). The gas-lift packoff (GLPO) system uses many of the same principles as conventional gas lift. The only difference is that it can be installed at any...
Proceedings Papers

Paper presented at the SPE Asia Pacific Improved Oil Recovery Conference, October 8–9, 2001
Paper Number: SPE-72155-MS
... be performed using the drilling rig, however it is not well suited for macaroni string operations where the required level of load sensitivity would be difficult to achieve. The lack of experience of the drilling crew in this kind of job would cause additional safety risk and operations inefficiency...
Journal Articles
J Pet Technol 65 (01): 93–96.
Paper Number: SPE-0113-0093-JPT
Published: 01 January 2013
... analysis and focus on failed cement jobs revealed the need to improve the placement method. The way in which the fluids were injected into the perfo- ration appeared to play a major role. As per the current technique, the fluids were pumped downhole by the 1.9-in.- outer-diameter pipe ( macaroni pipe...
Journal Articles
J Pet Technol 5 (06): 165–170.
Paper Number: SPE-953165-G
Published: 01 June 1953
... annulus. At pre·determined intervals, the surface controllor opens, takes the accumulated gas from the casing and introduces it down a 'tring of raroni tubing which is clamped to the regular wpl1 tullin 1"wer end of the macaroni string is connected to an interlll ;~pe gas lift valve in the tubing string...
Journal Articles
J Pet Technol 9 (07): 11–16.
Paper Number: SPE-771-G
Published: 01 July 1957
... and injection well behavior. Basic Procedures Two techniques that utilize the brine-fresh water interface method are available. Fig. 1 shows a diagram of the constant interface method. A macaroni tubing string, with an elec- trical probe on the lower end, is landed opposite the formation. An electrical signal...
Journal Articles
J Pet Technol 24 (04): 426–430.
Paper Number: SPE-3467-PA
Published: 01 April 1972
... of controlling injection into the desired sand and of altering injection profiles. It allows for the perforation of a mimmum number of sands in each casing string, and because macaroni tubing, packer, and bridge-plug arrangements can be used easily, it simplifies changing the water distribution profile...

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