Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
Sep. 30, 2018	Sep. 30, 2017
Summary of Significant Accounting Policies (Textual)
Asset retirement obligations	$ 493,467	$ 493,411
Excess of deposit insurance limits	$ 199,988
Antidilutive securities excluded from computation of earnings	8,080,000
Discount factor of oil and natural gas reserves	10.00%

Discount factor of oil and natural gas reserves.

No definition available.

Name:	dwog_DiscountFactorOfOilAndNaturalGasReserves
Namespace Prefix:	dwog_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expense for excess Federal Deposit Insurance Corporation (FDIC) insurance.

+ References

No definition available.

+ Details

Name:	dwog_ExcessOfFederalDepositsInsuranceLimit
Namespace Prefix:	dwog_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	dwog_SummaryOfSignificantAccountingPoliciesTextualAbstract
Namespace Prefix:	dwog_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

Name:	us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

+ Details

Name:	us-gaap_AssetRetirementObligationsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant