W. L. Bullock
Executive Vice President and Chief Financial Officer at ConocoPhillips
Thanks, Ryan. In the 4th-quarter, we generated $1.98 per share in adjusted earnings. Now we had a number of special items in the quarter. The two largest were related to the Marathon acquisition. First, we recorded over $400 million of transaction and integration-related expenses. Now this was mostly offset by over $400 million of tax benefits resulting from utilization of certain foreign tax credits associated with the Marathon acquisition. Both of these items were largely non-cash in the quarter and the onetime cash benefit will show-up as a working capital tailwind in the first-quarter of this year. And it is in addition to the NOLs associated with the Marathon acquisition that we expect to recognize over the next few years.
The transaction-related costs will gradually flow-through working capital during 2025 as we achieve our premise synergies. Shifting to 4th-quarter operations, we produced 2,183,000 barrels of oil equivalent per day. This included one month of production from the acquired Marathon assets, which added 126,000 barrels per day-to the quarter. Excluding Marathon's production, we achieved 8% underlying growth year-over-year. This is above the high-end of our guidance range. Now inclusive of one month of Marathon, Lower 48 produced 1,308,000 barrels of oil equivalent per day. And by basin, we produced 833,000 in the Permian, 296,000 in Eagle Ford and 151,000 in the Balkan.
Moving to cash flows. 4th-quarter CFO was over $5.4 billion, and this included over $250 million of AP LNG distributions. Operating working capital was a $1 billion headwind in the quarter, primarily due to normal changes in accounts receivable and accounts payable. Capital expenditures were $3.3 billion, which included approximately $400 million for spending related to acquisitions that was not premised in guidance. We returned more than $2.8 billion to shareholders, including just under $2 billion in buybacks and $900 million in ordering dividends in the quarter. We also completed a series of strategic debt transactions following the acquisition of Marathon. These transactions simplified our capital structure, extended the weighted-average maturity of our portfolio, lowered our weighted-average coupon rate and reduced near-term maturities.
We ended the year with cash and short-term investments of $6.4 billion and had $1.1 billion in long-term liquid investments. Turning to guidance, we forecast 2025 production to be in the range of 2.34 million to 2.38 million-barrels of oil equivalent per day. This takes into account 20,000 barrels per day of planned turnarounds. Turnarounds are expected to be highest in the second-quarter with a triennial turnaround at Eco Fiska, Norway, a turnaround at Qatar and maintenance in Australia. Then in the 3rd-quarter, we will have turnarounds in Alaska. For the first-quarter, we expect production to also be in a range of 2.34 million to 2.38 million-barrels oil equivalent per day. This guidance reflects a 20,000 barrel per day impact on the full-quarter from January weather events. We expect a minimal first-quarter impact from turnarounds and that's similar to the 4th-quarter.
For capital spending, our full-year guidance is approximately $12.9 billion. On Slide 8 of the presentation material, we provide a pro-forma bridge from 2024 to 2025 with some of the key year-over-year variables. In the Lower 48, we expect to reduce spending by approximately $1.4 billion. And for long-cycle projects, we expect to see $400 million increase in spending to roughly $3 billion in 2025, inclusive of capitalized interest of about $400 million. Finally, in Alaska and International, we expect to see a $200 million increase in spending, driven by our growth opportunities in Canada and Alaska. Shifting to cost guidance, we expect full-year adjusted operating costs to be in the range of $10.9 billion to $11.1 billion. Full-year cash exploration expenses are expected to be $300 million and full-year DD&A expense is expected to be in the range of $11.3 billion to $11.5 billion.
Full-year adjusted corporate segment net loss guidance is approximately $1.1 billion and we expect our effective corporate tax-rate to be in the 36% to 37% range at strip pricing. Excluding any onetime items with an effective cash tax-rate in the 35% to 36% range. And finally, on cash flows, we expect full-year AP LNG distributions to be about $1 billion with about $200 million in the first-quarter. So to wrap-up, Conoco Phillips had a strong year in 2024. We executed well operationally. We're continuing to deliver on our strategic initiatives across our deep, durable and diverse portfolio, and we remain highly competitive on our shareholder distributions. That concludes concludes our prepared remarks.
I'll turn it back over to the operator to start the Q&A.