The purpose of the present research effort is to develop a method for determination of partial (zonal) production rates in wells penetrating several pay intervals. It is common knowledge that physical and chemical properties and oil composition vary through reservoir thickness, along the strike and in the course of production operations. This relates to such parameters as density, viscosity, fractional composition, bubble-point pressure, gas-oil ratio, content of asphaltenes, resins, sulfur etc. However, laboratory determination of these parameters, for the most part, is challenging and time-consuming. Application of a set of parameters for production monitoring relies on regular sampling and analysis of the produced oil. Besides, the method provides for creation of a database, containing the data on oil properties for each production zone associated with a particular field.
A new method for determination of partial production rates of multizone wells has evolved in TatNIPIneft. This method uses spectrophotometric analysis and has already been implemented to identify the oil recovered from 28 dually completed wells of Ersubaikinskoye, Shegurchinskoye, and Yamashinskoye fields. A satisfactory match has been found between spectrophotometry data on production rates of individual production zones and the results obtained during plunger readjustment of a single-tubing-string dual completion system, as well as available production history information.
1. Gadzhi-Kasumov A.S., Kartsev A.A., Neftegazopromyslovaya
geokhimiya (Oil and gas geochemistry), Moscow: Nedra Publ., 1984,
2. Glumov I.F., Gil'manshin A.F., The use of oil photocolorimetry for solving
specific geological-field problems (In Russ.), Tatarskaya neft', 1961,
no. 6, pp. 23–25.
3. Glumov I.F., Gil'manshin A.F., Primenenie fotokolorimetrii neftey v
neftepromyslovom dele (The use of oil photocolorimetry in petroleum
engineering), Collected papers “Opyt razrabotki neftyanykh i
gazovykh mestorozhdeniy” (Experience in oil and gas fields development),
Proceedings of Union Conference, Kiev, 1961, Moscow, 1963,
4. Glumov I.F., Gil'manshin A.F., Vremennaya instruktsiya po primeneniyu
fotokolorimetrii dobyvaemykh neftey dlya resheniya geologopro
myslo vykh zadach (Temporary Instruction on the application of
photocolorimetry of produce oil for solving geological and field problems),
Bugul'ma: Publ. of TatNII, 1965, 38 p.
5. Devlikamov V.V., Markhasin I.L., Babalyan G.A., Opticheskie metody
kontrolya za razrabotkoy neftyanykh mestorozhdeniy (Optical methods
of monitoring the oil fields development of), Moscow: Nedra Publ.,
1970, 160 p.
6. Panteleev A.S., Gileva N.M., Grishin E.S., Solution of some prospecting
problems with the help of photocolorimetry on the fields of the Orenburg
region (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 1964, no. 4,
7. Bykov V.N., Altyntseva T.G., The use of oil photocolorimetry to solve
some geological and field problems on the deposits of the Perm region
(In Russ.), Geologiya i razrabotka neftyanykh mestorozhdeniy, 1965, V. 1,
8. Patent no. 2082876 RF, MKI E 21 V 43/00, 47/00, Method of control of
development of oil pool, Inventors: Glumov I.F., Ibatullin R.R., Roshchektaeva
9. Patent no. 2172403 RF, MKI E 21 V 47/10, Method of determination of
relative oil production rates of jointly operated oil objects, Inventors:
Glumov I.F., Slesareva V.V., Ibatullin R.R., Yakimov A.S.
10. Sachs L., Statistisehe Auswertungsmethoden, Springer-Verlag, Berlini-
Heidelberg-New York 1972.
To buy the complete text of article (a format - PDF) or to read the material which is in open access