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Engineering and technical issues of pulling a pipeline through a well of an submerged crossing

UDK: 621.644.074
DOI: 10.24887/0028-2448-2018-10-114-119
Key words: drilling rig, drill string, drill bit, drilling well, drilling mud, water barriers, drill string assembly, main pipeline, pilot drill hole, pipeline submerged crossing, directional drilling, horizontal directional drilling
Authors: Z.Z. Sharafutdinov (The Pipeline Transport Institute LLC, RF, Moscow), A.N. Sapsay (Transneft JSC), D.A. Shatalov (The Pipeline Transport Institute LLC, RF, Moscow), R.A. Kapaev (Transneft JSC), D.R. Vafin (The Pipeline Transport Institute LLC, RF, Moscow)

The construction of pipeline crossings through natural and artificial obstacles by directional drilling is associated with a great influence of geological conditions on the well. Complications arising in the process of pulling the pipeline are mainly due to the passage of curvilinear sections of the well in soils prone to collapse, namely gravel-pebble and very coarse ones. These areas are characterized by a significant increase in loads while reducing the speed of pulling.

The analysis of the process and results of construction of main oil and oil product pipeline submerged crossings by the directional drilling shows that inadequate control over well conditions leads to complete failure to comply with the time limits for the submerged crossing construction and therefore results in significant potential financial losses for the customer. The most technically complex and often leading to emergency incidents are cases with the collapse of the walls, leading to the impossibility of pulling the submerged pipeline and the need to build the crossing in a new location. The existing standard methods of control over the well conditions allow to control only the crossing profile along the bottom generatiх of the constructed well, but do not provide an opportunity to assess the changes that occurred at the upper generatiх of the well during the crossing construction. This limits the possibility to model the spatial state of the well, to assess its suitability for the pipeline pulling.

To ensure strict and technically justified regulation of the activities of design and contracting organizations in the field of submerged crossing construction, it is necessary to find methods and technologies that allow monitoring the submerged crossing well conditions at its acceptance from the contractor carrying out the drilling.

References

1. Sharafutdinov Z.Z., Parizher V.I., Sorokin D.N. et al., Stroitel'stvo perekhodov magistral'nykh truboprovodov cherez estestvennye i iskusstvennye prepyatstviya (Construction of crossings of trunk pipelines through natural and artificial obstacles), Novosibirsk: Nauka Publ., 2013, 339 p.

2. Sal'nikov A.V., Zorin V.P., Aginey R.V., Metody stroitel'stva podvodnykh perekhodov gazonefteprovodov na rekakh Pechorskogo basseyna (Construction methods for underwater crossings of gas and oil pipelines on the rivers of the Pechora basin), Ukhta: Publ. USTU, 2008, 108 p.

3. Kharitonov V.A., Bakhareva N.V., Organizatsiya i tekhnologiya stroitel'stva truboprovodov metodom gorizontal'no-napravlennogo bureniya (Organization and technology of construction of pipelines using horizontal directional drilling), Moscow: ASV Publ., 2011, 344 p.

4. Sharafutdinov Z.Z., Komarov A.I., Golofast S.L., Pilot drill hole reaming in construction of trunk pipelines’ submerged crossings (In Russ.), Truboprovodnyy transport: teoriya i praktika, 2016, no. 5(57), pp. 32–40.

5. Varlamov N.V. Sharafutdinov Z.Z., Building pipeline crossings: selecting the reaming technology (In Russ.), Oil & Gas Journal Russia, 2011, no. 10, pp. 92–96.

6. Rotimi O.O., Chinwuba V.O., Christopher O.A., Analyses of pipelines for deep horizontal directional drilling installation, American Journal of Mechanical Engineering, 2016, V. 4, no. 4, pp. 153–162, DOI: 10.12691/ajme-4-4-4.

7. Pipeline design for installation by horizontal directional drilling: edited by Eric R., Skonberg P.E., Tennyson M., Muindi P.E., Publ. of ASCE, 2014.

8. ASTM F1962 – 11. Standard guide for use of maxi-horizontal directional drilling for placement of polyethylene pipe or conduit under obstacles, including river crossings, Publ. of ASTM, 2011.

9. Vafin D.R., Komarov A.I., Shatalov D.A., Sharafutdinov Z.Z., Geomechanical modeling of building conditions for main pipeline submerged crossings (In Russ.), Nauka i tekhnologii truboprovodnogo transporta nefti i nefteproduktov, 2016, no. 4(24), pp. 54–64.

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The construction of pipeline crossings through natural and artificial obstacles by directional drilling is associated with a great influence of geological conditions on the well. Complications arising in the process of pulling the pipeline are mainly due to the passage of curvilinear sections of the well in soils prone to collapse, namely gravel-pebble and very coarse ones. These areas are characterized by a significant increase in loads while reducing the speed of pulling.

The analysis of the process and results of construction of main oil and oil product pipeline submerged crossings by the directional drilling shows that inadequate control over well conditions leads to complete failure to comply with the time limits for the submerged crossing construction and therefore results in significant potential financial losses for the customer. The most technically complex and often leading to emergency incidents are cases with the collapse of the walls, leading to the impossibility of pulling the submerged pipeline and the need to build the crossing in a new location. The existing standard methods of control over the well conditions allow to control only the crossing profile along the bottom generatiх of the constructed well, but do not provide an opportunity to assess the changes that occurred at the upper generatiх of the well during the crossing construction. This limits the possibility to model the spatial state of the well, to assess its suitability for the pipeline pulling.

To ensure strict and technically justified regulation of the activities of design and contracting organizations in the field of submerged crossing construction, it is necessary to find methods and technologies that allow monitoring the submerged crossing well conditions at its acceptance from the contractor carrying out the drilling.

References

1. Sharafutdinov Z.Z., Parizher V.I., Sorokin D.N. et al., Stroitel'stvo perekhodov magistral'nykh truboprovodov cherez estestvennye i iskusstvennye prepyatstviya (Construction of crossings of trunk pipelines through natural and artificial obstacles), Novosibirsk: Nauka Publ., 2013, 339 p.

2. Sal'nikov A.V., Zorin V.P., Aginey R.V., Metody stroitel'stva podvodnykh perekhodov gazonefteprovodov na rekakh Pechorskogo basseyna (Construction methods for underwater crossings of gas and oil pipelines on the rivers of the Pechora basin), Ukhta: Publ. USTU, 2008, 108 p.

3. Kharitonov V.A., Bakhareva N.V., Organizatsiya i tekhnologiya stroitel'stva truboprovodov metodom gorizontal'no-napravlennogo bureniya (Organization and technology of construction of pipelines using horizontal directional drilling), Moscow: ASV Publ., 2011, 344 p.

4. Sharafutdinov Z.Z., Komarov A.I., Golofast S.L., Pilot drill hole reaming in construction of trunk pipelines’ submerged crossings (In Russ.), Truboprovodnyy transport: teoriya i praktika, 2016, no. 5(57), pp. 32–40.

5. Varlamov N.V. Sharafutdinov Z.Z., Building pipeline crossings: selecting the reaming technology (In Russ.), Oil & Gas Journal Russia, 2011, no. 10, pp. 92–96.

6. Rotimi O.O., Chinwuba V.O., Christopher O.A., Analyses of pipelines for deep horizontal directional drilling installation, American Journal of Mechanical Engineering, 2016, V. 4, no. 4, pp. 153–162, DOI: 10.12691/ajme-4-4-4.

7. Pipeline design for installation by horizontal directional drilling: edited by Eric R., Skonberg P.E., Tennyson M., Muindi P.E., Publ. of ASCE, 2014.

8. ASTM F1962 – 11. Standard guide for use of maxi-horizontal directional drilling for placement of polyethylene pipe or conduit under obstacles, including river crossings, Publ. of ASTM, 2011.

9. Vafin D.R., Komarov A.I., Shatalov D.A., Sharafutdinov Z.Z., Geomechanical modeling of building conditions for main pipeline submerged crossings (In Russ.), Nauka i tekhnologii truboprovodnogo transporta nefti i nefteproduktov, 2016, no. 4(24), pp. 54–64.

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