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Guide to Reporting Geothermal Field Data

Steam Production Report

(The Geysers Geothermal field only)

Gross Steam Production
Total mass or weight of steam produced during the report month. Should be metered at or near the wellhead. Report steam rate, temperature, and pressure measured at a specific point in time consistent with the restraints described below. Pressure and temperature must be reported for all wells.

API number: 8-digit api number assigned by the Division.
Status: Report the appropriate well-status code listed below. To choose the correct code, start at the top,  go down the list one-by-one, and select the first code that applies.
CONV: After receiving approval from the Division, the well was converted from a producing well to an injection well, or an injection well to a producing well at any time during the month. A conversion generally happens just once. CONV must be entered on both applicable forms. Report the appropriate steam production information on the Geothermal Steam Production Report and the appropriate injection information on the Geothermal Water Injection Report. The total number of days on both reports cannot exceed the number of days in a month.
ABDN: Well was abandoned any time during the month.
TEST: Well was tested for production.*
BLOW: Well was flowed for mechanical purposes.*
SHTN: Well did not produce commercial steam.*
PROD: Well produced commercial steam.*

* Report the status of the well on the last day of the month.

Type; Report the appropriate well-type code from those listed below. To choose the correct code, start at the top, go down the list one-by-one, and select the first code that applies.
DI: After receiving approval from the Division, the well was converted to and is now operated as a dual-purpose well (i.e. well is completed as both a production and an injection well). Report the appropriate steam production information on the Geothermal Steam Production Report and the appropriate injection information on the Geothermal Water Injection Report. The total number of Days on both reports cannot exceed the number of days in a month. DI must be entered on both reports.
ST: Steam well.*
SW: Steam well with minor associated water (use when the steam quality at the wellhead is less than .95).*
GS: Groundwater-source well.*

* Report the type of the well on the last day of the month

Days:

The number of calendar days during which steam in commercial quantities was produced from the well. Count production for a fractional part of a day as one day of production.

S/T (Stable/Test)
The portion of the form, beginning with the S/T column, includes information that is used to calculate enthalpy, downhole pressure, etc. Report the appropriate code listed below that best describes the manner in which the wellhead readings were recorded: *

T: One or more tests were run during the month. For one test considered to be representative of production, report the steam production rate, water production rate, and corresponding temperature and pressure, during the test, for a point in time assumed to represent stable conditions.
S: The well produced commercial steam for 15 days or more. Wellhead readings should be taken during a period of production assumed to represent typical or stable conditions. Report the steam-production rate, water-production rate, and corresponding temperature and pressure.
N: The well was shut in for 15 days or more and the well was not tested for production. Report only the maximum pressure and corresponding temperature recorded during the shut-in period.

Steam rate
When S or T is entered above, report the corresponding, instantaneous, steam-production rate.

Water rate
The corresponding, instantaneous, water-production rate.

Temp
The corresponding, instantaneous, wellhead temperature. If the well was shut in for 15 days or more and the well was not tested for production, report the maximum pressure in the pressure column and corresponding temperature in the temperature column. The temperature gauge must be installed on the wellhead upstream from the choke or valve and give the true wellhead temperature. Do not report an “0” for temperature for an unavailable reading. Leave blank if you must.

Press
The corresponding, instantaneous, wellhead pressure (gauge pressure). If the well was shut in for 15 days or more and the well was not tested for production, report the maximum pressure in the pressure column and the corresponding temperature in the temperature column. The pressure gauge must be installed on the wellhead upstream from the choke or valve and give the true wellhead pressure.