Prepared Remarks:

Operator

Good day, everyone, and welcome to EOG Resources second-quarter 2023 earnings results conference call. As a reminder, this call is being recorded. At this time, for opening remarks and introductions, I'd like to turn the call over to chief financial officer of EOG Resources, Mr. Tim Driggers.

Please go ahead, sir.

Tim Driggers -- Chief Financial Officer

Thank you. Good morning and thanks for joining us. This conference call includes forward-looking statements. Factors that could cause our actual results to differ materially from those in our forward-looking statements have been outlined in the earnings release and EOG's SEC filings.

This conference call also contains certain non-GAAP financial measures. Definitions and reconciliation schedules for these non-GAAP measures can be found on EOG's website. Some of reserve estimates on this conference call may include estimated potential reserves and estimated resource potential, not necessarily calculated in accordance with the SEC's reserve reporting guidelines. Participating on the call this morning are Ezra Yacob, chairman, and CEO; Billy Helms, president and chief operating officer; Ken Boedeker, EVP, exploration and production; Jeff Leitzell, EVP, exploration and production; Lance Terveen, senior VP, marketing; and David Streit, treasurer and VP, investor relations and finance.

Here's Ezra.

Ezra Yacob -- President

Thanks, Tim. Good morning, everyone. Our second-quarter results reflect exceptional execution throughout our multi-basin portfolio, production volumes, capex, cash operating costs, and DD&A all beat targets, driving another quarter of excellent financial performance. We earn $1.5 billion of adjusted net income and generated $1 billion of free cash flow.

Year to date, we have generated free cash flow of $2.1 billion. Net free cash flow and cash on the balance sheet funded year-to-date cash return to shareholders of $2.2 billion, including more than $600 million of share repurchases executed during the first half of the year. Taking into account our full-year regular dividend, we have committed to return $3.1 billion to shareholders in 2023, or about 67% of our estimated 2023 cash flow, assuming a $75 oil price, well ahead of our target minimum return of 60%. EOG's peer-leading regular dividend is currently the majority of the $3.1 billion of cash return committed to shareholders this year.

Our sustainable growing regular dividend, which we have never cut nor suspended, remains the first priority to return cash. We also continue to leverage special dividends and buybacks to return additional cash depending on market conditions. Through the first two quarters of 2023, we have deployed more than $600 million to opportunistically repurchase shares during times of increased volatility. And while our cash return strategy remains consistent, what has evolved since putting the $5 billion repurchase authorization in place over a year and a half ago is the fundamental strength of our business, and we continue to get better through relentless execution of and commitment to EOG's value proposition.