Monthly Natural Gas Storage Survey 2017

Reporting Guide

Statistics Canada
Environment, Energy and Transportation Statistics Division
Energy Section

This guide is designed to assist you as you complete the 2017 Monthly Natural Gas Survey.

Help Line: 1-877-604-7828

Storage facilities include natural gas storage caverns such as: depleted oil and gas reservoirs, aquifer reservoirs, salt cover reservoirs. Liquefied Natural Gas (LNG) storage facilities are out of scope for this survey.

Units: Report Gigajoules (GJs) of natural gas stored during the month under review.

Confidentiality

Statistics Canada is prohibited by law from releasing any information it collects which could identify any person, business, or organization, unless consent has been given by the respondent or as permitted by the Statistics Act. Statistics Canada will use the information from this survey for statistical purposes.

Table of Contents

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A – Reporting Instructions

Please report information for a specific reference month in 2017.

Please complete all sections as applicable.

If the information requested is unknown, please provide your best estimate.

This guide is designed to assist you as you complete the Monthly Natural Gas Storage Survey. If you need more information, please call 1-877-604-7828.

B – Reporting Instructions and Natural Gas Definitions

Question 1: OPENING INVENTORY

1a: Opening inventory of base or cushion gas

Report total amount of base or cushion gas held by the establishment on the first day of the month under review. This should equal the closing inventory of the previous month.

Definition:

  • Base gas, also referred to as cushion gas is the amount of gas that must be present in storage at all times to maintain a storage facility’s pressure.

1b: Opening inventory of working gas

Report total amount of working gas held by the establishment on the first day of the month under review. This should equal the closing inventory of the previous month.

Definition:

  • Working gas is the amount of gas that can be withdrawn from storage while maintaining a storage facility’s minimum operating pressure.

Total opening inventory of natural gas

Report total amount of natural gas held by the establishment on the first day of the month under review. This should equal the sum of the base/cushion gas and working gas.

Question 2: CLOSING INVENTORY

2a: Closing inventory of base or cushion gas

Report total amount of base or cushion gas held by the establishment on the last day of the month under review.

Definition:

  • Base gas, also referred to as cushion gas is the amount of gas that must be present in storage at all times to maintain a storage facility’s pressure.

2b: Closing inventory of working gas

Report total amount of working gas held by the establishment on the last day of the month under review.

Definition:

  • Working gas is the amount of gas that can be withdrawn from storage while maintaining a storage facility’s minimum operating pressure.

Total closing inventory of natural gas

Report total amount of natural gas held by the establishment on the last day of the month under review. This should equal the sum of the base/cushion gas and working gas.

Question 3: HEATING VALUE OF STORED NATURAL GAS

3: Average heating value of stored natural gas in gigajoules per thousand cubic metres

Report average heat content of your natural gas held in storage for the month under review.

Question 4: INJECTED, WITHDRAWN AND INVENTORY ADJUSTMENTS OF NATURAL GAS STORAGE

4a: Injected in to storage

Report total amount of natural gas received by the establishment for month under review.

4b: Withdrawn from storage

Report total amount of natural gas delivered by the establishment for month under review.

4c: Other adjustments

This calculated amount is the difference between (1) opening and closing inventories and (2) injections and withdrawals. This difference includes discrepancies due to meter inaccuracies and/or leakage or other losses. Inventory adjustments can be a positive or negative value.

  • Inventory adjustments = (closing – opening inventories) – (withdrawals – injections)

Net withdrawals of natural gas from inventories

This calculated amount is the difference between (1) withdrawals and (2) the sum of injections and inventory adjustments. Net withdrawals can be a positive or negative value.

  • Net withdrawals = withdrawals – (injections + inventory adjustments)

Question 5: NATURAL GAS HELD IN THE UNITED STATES

5: Natural gas in storage facilities in the United States

Report total amount of natural gas held by the establishment in storage facilities located in the United States for eventual use in Canada.

Thank you for your participation.

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