Maintaining Efficient Operation of Low-Yield Wells During the Development of the Cenomanian Deposit

The object of the study is the Cenomanian deposit during the period of self-damping of wells. The accumulation of droplet liquid causes destruction of the rock skeleton and increases pressure loss during gas movement in the well, which affects the dynamics of the operating stock indicators. The experience of introducing pipes with a diameter of 114 mm at the Yamburgskoye field increased the water-free period of well operation without self-pressure. Based on the available information on the development of the Cenomanian deposit, a forecast was made of the likely beginning of self-suffocation of the well stock for the current period until 2030. Thus, the results and forecast estimates showed that in almost all analyzed wells, conditions for water removal are maintained for a period of up to five years, and in some, waterless conditions will remain for more than ten years. Thus, it is recommended to replace the lift string for each specific well by analyzing its operating conditions and using temporary killing technology using special lightweight solutions that do not lead to contamination of the bottom-hole zone of the formation. During the development of Cenomanian deposits in the fields of the Far North, in the process of reducing reservoir pressure, fluid accumulation occurs at the bottom. For efficient operation of wells, it is necessary to create optimal technological operating modes for water removal and carry out measures to limit water inflows. Having analyzed various methods of combating self-squeezing of wells, it was concluded that in the conditions of development of the Yamburg field, the most effective is to replace lift pipes with pipes of smaller diameter, which allows increasing the rate of gas rise into the tubing and leads to self-cleaning of wells from liquid accumulating at the bottom.

1. Ovechkina ES, Levitina EE. Technologies for the operation of flooded gas wells. New technologies for the oil and gas region: materials of the International Scientific and Practical Conference, Tyumen, May 16–20, 2016. Volume I. Tyumen: Tyumen Industrial University; 2016. P. 149–154. (In Russ.).

2. Sarancha AV, Levitina EE, Esikov SN. Application of various technologies for the operation of spontaneously stopping gas wells in the fields of the Far North. Nauka. Innovacii. Tekhnologii = Science. Innovations. Technologies. 2019;(3):7–18. https://doi.org/10.37495/2308-4758-2019-3-7-18. (In Russ.).

3. Gasumov RA, Kukulinskaya EYu. Technological solutions aimed at limiting the removal of reservoir sand from producing gas wells. Nauka. Innovacii. Tekhnologii = Science. Innovations. Technologies. 2016;(3):165–176. (In Russ.).

4. Ivanova MS, Inyakina EI, Krasnov II, Inyakin VV. The influence of mining and geological conditions on the development of hydrocarbon reserves.Gornyj zhurnal = Mining magazine. 2019;(2):10–12. (In Russ.).

5. Vaganov EV, Sokhoshko SK, Krasnov II. Forecast of the success of measures to limit water inflows in gas wells. Nauka. Innovacii. Tekhnologii = Science. Innovations. Technologies. 2023;(1):137–154. (In Russ.).

6. Sarancha AV, Levitina EE, Mamchistova EI. Borehole gas production at fields at the final stage of development. Moscow: Limited Liability Company “Ruseins”; 2022. 162 p. (In Russ.).

7. Krasnov II, Inyakina EI. Prospects for the development of complicated oil and gas deposits using geological and technical measures.Neft’ i gaz: opyt i innovacii = Oil and gas: experience and innovation. 2018;(2):29–52. (In Russ.).

8. Kleshchenko II, Yagafarov AK, Krasnov II, Sokhoshko SK. Method for intensifying oil and gas flows. Patent for invention RU 2249100 C2, 03/27/2005. Application No. 2002112132/03 dated 05/06/2002. (In Russ.).

9. Nasyrova AI, Levitina EE, Mamchistova EI. Calculation of the Optimal Gas Flow Rate Under Conditions of Sand Plug Formation. IOP Conference Series: Earth and Environmental Science, Virtual, Online, January 10–12, 2022. Virtual, Online; 2022. P. 022089. DOI 10.1088/1755-1315/988/2/022089.

10. Ponomarev AI, Ragimov TT, Shigidin OA. Experience in operating a gas well with concentric lift columns. Nauka. Innovacii. Tekhnologii = Science. Innovations. Technologies. 2019;(4):19–32. DOI 10.37495/2308-4758-2019-4-19-32. (In Russ.).