Laboratory research of change in reservoir properties of polymictic sandstones after their development using polymer drilling mud

New methods and technologies

Section editor – PhD in geology and mineralogy Prischepa O.M.

Article # 10_2015	submitted on 12/23/2013 displayed on website on 03/18/2015
16 p.	Podoprigora D.G., Petukhov A.V., Syuzev O.B.
pdf	Laboratory research of change in reservoir properties of polymictic sandstones after their development using polymer drilling mud
	Samples of polymictic sandstones from different fields after impact of polymer drilling mud were studied in vitro. During core samples studying by means of FDES-645 installation the existence of micro-fractures was confirmed in core samples from low-permeability polymictic sandstones of the Dneprovsko-Donetsky structural low and the possibility of their disclosure in the course of drilling was shown for the purpose to assess a damage rate of productive layer in the static and dynamic modes. On the example of core sample of polymictic sandstone of the Vyngapurovsky field located in the Western Siberia the twofold decrease in permeability after dynamic impact of polymer drilling mud modeling conditions of well washing is shown. As a result of experiments the formation of a firm polymeric film of drilling mud at high temperatures was also identified. It is shown that this film can be effectively deleted with water solution of hydrochloric acid. Keywords: polymictic sandstones, polymer drilling mud, permeability, micro-fractures, polymeric film, hydrochloric acid, Dneprovsko-Donetsky structural low, Western Siberia.
article citation	Podoprigora D.G., Petukhov A.V., Syuzev O.B. Laboratornye issledovaniya izmeneniya fil'tratsionno-emkostnykh svoystv polimiktovykh peschanikov pri ikh vskrytii s ispol'zovaniem polimernogo burovogo rastvora [Laboratory research of change in reservoir properties of polymictic sandstones after their development using polymer drilling mud]. Neftegazovaya Geologiya. Teoriya I Praktika, 2015, vol. 10, no. 1, available at: http://www.ngtp.ru/rub/12/10_2015.pdf
DOI	https://doi.org/10.17353/2070-5379/10_2015

References

   Kalinin V.F. Intensifikatsiya pritokov nefti i gaza pri osvoenii skvazhin, vskryvshikh terrigennye kollektory [Intensifikation of inflows of oil and gas during development of wells which opened terrigenous reservoirs]. Neftyanoe khozyaystvo, 2005, no. 1, p. 61-63.
   Khanin A.A. Porody-kollektory nefti i gaza i ikh izuchenie [Reservoir-rocks of oil and gas and their studying]. Moscow: Kniga po Trebovaniyu, 2012, 367 p.
   Kozak N. Polisakharid ksantan: svoystva i potentsial primeneniya [Ksantan polysaccharide: properties and potential applications]. 2006, available at: http://www.newchemistry.ru/letter.php?n_id=1705 (access date: 05.12.2014).
   Leusheva E.L., Turitsyna M.V., Straupnik I.A., Blinov P.A., Nikolaev N.I. Burovye tekhnologicheskie zhidkosti: Metodicheskie ukazaniya k laboratornym rabotam dlya studentov napravleniya 131000 «Neftegazovoe delo» profil' «Burenie neftyanykh i gazovykh skvazhin» [Drilling technological liquids: Methodical instructions to laboratory works for students of the direction 131000 "Oil and gas business", "Drilling of Oil and Gas Wells" profile]. National mineral resources university “University of Mines”. Saint Petersburg, 2014, 65 p.
   Nemkov A.S., Katoshin D.Yu., Borisov B.F., Velichko K.T., Chvanov V.O. Issledovanie vliyaniya polimernykh burovykh rastvorov na otsenku kollektorskikh svoystv plastov po kernu [Research of influence of polymeric drilling mud on an assessment of reservoir properties of layers on a core]. Neftyanoe khozyaystvo, 2013, no. 11, p. 97-101.
   Petukhov A.V. Tekhnologiya i tekhnika povysheniya nefteotdachi plastov: Uchebnoe posobie dlya studentov, obuchayushchikhsya po napravleniyu 131000 «Neftegazovoe delo» [Technology and techniques of increase of oil recovery of layers: The manual for the students who are trained in the direction 131000 "Oil and gas business"]. Saint Petersburg: VNIGRI, 2014, 108 p. (Trudy VNIGRI).