Table 1 Detailed overview of the data fields related to the natural gas production.

From: A dataset of Natural Gas and Liquid Level for Oil Field Production Prediction in China

Field Name

Data Type

Description

Date

Datetime

Accurately record the time of each piece of data for analyzing the time trend and periodic changes in the production process.

Well ID

String

Uniquely identify different production wells to facilitate separate analysis and comparison of production data for each well.

Layer

String

Describe the gas production layer, helping to understand the production characteristics of different layers.

Days of production

Int

Reflect the production time length of each well from the start of production to the statistical moment to assess the well’s production stability and maturity.

Production hours

Int

Represent the daily production duration for analyzing production efficiency.

Total production hours

Int

Accumulate the total production time from the start of production to the current moment to understand the overall production contribution of the well.

Production manner

String

Record different production operation modes, such as normal production, intermittent production, or maintenance production, which is of significant importance for studying the impact of production methods on output.

Gas volume

Float

Record the daily natural gas output in standard units of 104m3, which is one of the key indicators for evaluating the gas production capacity.

Water volume

Float

Record the daily water output to analyze the impact of water phase changes in the production process on gas production −m3.

Oil volume

Float

Reflect the daily oil output for a comprehensive evaluation of the overall benefit of oil and gas production −m3.

Total gas production

Float

Accumulate the cumulative natural gas output from the start of production to the current moment to show the long-term production trend −104m3.

Total water

Float

Accumulate the cumulative water output from the start of production to the current moment to reflect the water phase production situation −m3.

Total oil production

Float

Accumulate the cumulative oil output from the start of production to the current moment for a comprehensive assessment of the overall benefit of oil and gas production −m3.

Wellhead pressure

Float

May initially be recorded as a string value for pressure and can be converted to a numerical value after processing for analyzing the impact of wellhead pressure on production.

Casing pressure

Float

Record the inlet pressure, which is important for evaluating the pressure condition of the entire production system Mpa.

Daily methanol injection volume

Float

Record the daily methanol injection volume, which has a certain impact on regulating the fluid properties in the production process -L.

Monthly cumulative methanol injection volume

Float

Accumulate the monthly cumulative methanol injection volume to analyze the long-term effect of the methanol injection strategy -L.

Comparison of casing pressure with the previous day

Float

Record the comparison of casing pressure with the previous day to help analyze the pressure change trend -(Mpa).

Stage rate of pressure drop in casing

String

May be various types of data that require further analysis to determine for describing the pressure drop rate in a specific stage -(Mpa/d).

Memo

String

Provide supplementary explanations and notes regarding the production data, which may contain special circumstances, operation adjustments, and other information.